diff --git a/backend/src/app.controller.ts b/backend/src/app.controller.ts
index f35a87c..41b4ac3 100644
--- a/backend/src/app.controller.ts
+++ b/backend/src/app.controller.ts
@@ -32,8 +32,9 @@ export class AppController {
     return await this.sinusBotService.fetchStats();
   }
 
-  @Get('/stats/season/:id')
+  @Get('/stats/season/:id?')
   async getStats(@Param('id') id?: string): Promise<UserStatsResponse> {
+    logger.info(`Got id ${id}`)
     return await this.databaseService
       .fetchStats(id)
       .catch(err => {
diff --git a/backend/src/database/database.service.ts b/backend/src/database/database.service.ts
index 4f95ffa..3e35043 100644
--- a/backend/src/database/database.service.ts
+++ b/backend/src/database/database.service.ts
@@ -7,6 +7,7 @@ import {
 } from '../models/aliases';
 import { PrismaService } from '../prisma/prisma.service';
 import { seasons } from '@prisma/client';
+import logger from 'src/logger/Logger';
 
 @Injectable()
 export class DatabaseService {
@@ -25,7 +26,7 @@ export class DatabaseService {
     })
       .then(value => this.prismaClient.seasons.findUnique({
       where: {
-        season_id: Number((!seasonId ? value : seasonId))
+        season_id: Number(seasonId ?? value)
       }
     }) as Promise<seasons>)
       .then((result: SeasonInfo) => {
diff --git a/frontend/package.json b/frontend/package.json
index 6d3aadb..27a9300 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -14,8 +14,8 @@
     "husky": "^4.3.7",
     "lint-staged": "^10.5.3",
     "prettier": "^2.2.1",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1",
+    "react": "17.0.0",
+    "react-dom": "17.0.0",
     "react-router": "^5.2.0",
     "react-router-dom": "^5.2.0",
     "react-scripts": "3.4.1",
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 6ae09a8..05c9703 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -11,30 +11,10 @@ library.add(faArrowCircleLeft, faArrowCircleRight)
 const App: FunctionComponent = () => (
     <Router>
         <Switch>
-            {/*<Route exact path={'/'} component={(props: IMainPageProps) => (<MainPage {...props}/>)} />*/}
-            <Route path={'/season/:id'} component={(props: IMainPageProps) => (<MainPage {...props}/>)} />
+            <Route path={'/season/:id?'} component={(props: IMainPageProps) => (<MainPage {...props}/>)} />
             <Redirect to={'/season'} />
         </Switch>
     </Router>
 );
 
-export default App;
-
-
-// export default class App extends React.Component {
-
-  // componentDidMount() {
-    // this.setState({loading: false, mock: this.mockService.getStatsWithoutPromise()});
-    // this.apiService.getStats()
-    //   .then(data => this.setState({
-    //     isLoaded: true,
-    //     users: data
-    //   }))
-    //   .catch(error => {
-    //     error.response.json()
-    //       .then((err: any) => this.setState({
-    //         isLoaded: true,
-    //         error: err.error
-    //       }))
-    //   });
-  // }
\ No newline at end of file
+export default App;
\ No newline at end of file
diff --git a/frontend/src/components/SeasonDetail/SeasonDetail.tsx b/frontend/src/components/SeasonDetail/SeasonDetail.tsx
index 041d7c4..bc85441 100644
--- a/frontend/src/components/SeasonDetail/SeasonDetail.tsx
+++ b/frontend/src/components/SeasonDetail/SeasonDetail.tsx
@@ -7,17 +7,21 @@ const SeasonDetail: React.FC<IUserListProperties> = (props: IUserListProperties)
 
   return (
     <span className="SeasonDetail" data-testid="SeasonDetail">
-      Season {seasonId} - Duration: {dates.start.toDateString()} - {dates.end.toDateString()}
+      Season {seasonId} - Duration: {dateToString(dates.start)} - {dateToString(dates.end)}
     </span>
   )
 }
 
+const dateToString = (date?: Date): string => {
+  return date ? date.toLocaleDateString('en-GB') : 'TBD';
+}
+
 export interface SeasonDetailProperties {
-  seasonId: string,
+  seasonId?: string,
   maxSeasonId: string
   dates: {
-    start: Date,
-    end: Date
+    start?: Date,
+    end?: Date
   }
 }
 
diff --git a/frontend/src/components/SeasonSwitch/SeasonSwitch.tsx b/frontend/src/components/SeasonSwitch/SeasonSwitch.tsx
index ec60103..33912e6 100644
--- a/frontend/src/components/SeasonSwitch/SeasonSwitch.tsx
+++ b/frontend/src/components/SeasonSwitch/SeasonSwitch.tsx
@@ -10,14 +10,18 @@ const SeasonSwitch: React.FC<IUserListProperties> = (props: IUserListProperties)
     const maxSeasonId = Number(props.userStats.maxSeasonId)
 
     return (
-        <div className={"SeasonSwitch " + (!props.enabled && " no-click")} data-testid="SeasonSwitch">
+        <div className={"SeasonSwitch"} data-testid="SeasonSwitch">
             {
                 seasonId > 1
                 && (props.enabled
-                  ? <Link to={"/season/" + (seasonId - 1)} onClick={() => props.onSeasonIdChange('' + (seasonId - 1))}>
+                  && <Link to={"/season/" + (seasonId - 1)} onClick={() => {
+                    console.log("nothing happens")  
+                    props.onSeasonIdChange('' + (seasonId - 1))}}>
                         <FontAwesomeIcon icon="arrow-circle-left"/>
                     </Link>
-                  : <Link to={""} onClick={(e) => e.preventDefault()}>
+                  || <Link to={""} onClick={(e) => {
+                    console.log("nothing happens2")  
+                      e.preventDefault()}}>
                       <FontAwesomeIcon icon="arrow-circle-left"/>
                   </Link>)
             }
diff --git a/frontend/src/components/UserList/UserList.tsx b/frontend/src/components/UserList/UserList.tsx
index 1513529..56bdce1 100644
--- a/frontend/src/components/UserList/UserList.tsx
+++ b/frontend/src/components/UserList/UserList.tsx
@@ -24,7 +24,7 @@ const createTableEntries = (entries: TableEntry[]) =>
 const UserList: React.FC<IUserListProperties> = (props: IUserListProperties) => (
     <div className="UserList" data-testid="UserList">
         <SeasonSwitch {...props} />
-        <table>
+        <table className={!props.enabled ? "blurred" : ""}>
             <thead>
             <tr>
                 <th>Placement</th>
@@ -43,7 +43,7 @@ const UserList: React.FC<IUserListProperties> = (props: IUserListProperties) =>
 export interface IUserListProperties {
     userStats: UserStatsResponse
     mocked?: boolean
-    onSeasonIdChange: any
+    onSeasonIdChange: React.Dispatch<React.SetStateAction<string | undefined>>
     enabled: boolean
 }
 
diff --git a/frontend/src/mock/UserStatsMockService.ts b/frontend/src/mock/UserStatsMockService.ts
index a552a4c..6d47c8e 100644
--- a/frontend/src/mock/UserStatsMockService.ts
+++ b/frontend/src/mock/UserStatsMockService.ts
@@ -1,6 +1,7 @@
 import UserStatsResponse from "../models/UserStatsResponse";
+import UserStatsService from "../services/UserStatsService";
 
-export default class UserStatsMockService {
+export default class UserStatsMockService extends UserStatsService {
     private static readonly mocks: UserStatsResponse[] = [
         {
             seasonId: "1",
@@ -33,14 +34,30 @@ export default class UserStatsMockService {
                 { name: "Humen", rank: "12", onlineTime: "0d 1h 0m 0s" },
                 { name: "Humen", rank: "ok", onlineTime: "0d 1h 0m 0s" }
             ]
-        }
+        },
+        {
+            seasonId: 'undefined',
+            maxSeasonId: "2",
+            dates: {
+                start: undefined,
+                end: undefined
+            },
+            stats: [
+                { name: "Humen", rank: "Overwatch Noob", onlineTime: "0d 1h 0m 0s" },
+                { name: "Humen", rank: "Random Rank 3", onlineTime: "0d 1h 0m 0s" },
+                { name: "Humen", rank: "Kas is cool", onlineTime: "0d 1h 0m 0s" },
+                { name: "Humen", rank: "Bremsspur", onlineTime: "0d 1h 0m 0s" },
+                { name: "Humen", rank: "12", onlineTime: "0d 1h 0m 0s" },
+                { name: "Humen", rank: "ok", onlineTime: "0d 1h 0m 0s" }
+            ]
+        }        
     ]
 
-    static async getStats(seasonId: string): Promise<UserStatsResponse> {
-        return Promise.resolve(this.mocks[Number(seasonId) - 1])
+    public static async getStats(seasonId?: string): Promise<UserStatsResponse> {
+        return Promise.resolve(this.mocks[Number((seasonId ? seasonId : 2)) - 1])
     }
 
-    static getStatsWithoutPromise(seasonId: string): UserStatsResponse {
-        return this.mocks[Number(seasonId) - 1]
+    static getStatsWithoutPromise(seasonId?: string): UserStatsResponse {
+        return this.mocks[Number((seasonId ? seasonId : 2)) - 1]
     }
 }
diff --git a/frontend/src/pages/MainPage/MainPage.tsx b/frontend/src/pages/MainPage/MainPage.tsx
index e16560a..544dfed 100644
--- a/frontend/src/pages/MainPage/MainPage.tsx
+++ b/frontend/src/pages/MainPage/MainPage.tsx
@@ -13,13 +13,15 @@ import {ClipLoader} from "react-spinners";
 import UserStatsService from "../../services/UserStatsService";
 
 const MainPage: FC<IMainPageProps> = (props: IMainPageProps) => {
-    const [seasonId, setSeasonId] = useState(props.match.params.id)
-    const [error, setError] = useState<RequestError | undefined>(undefined)
-    const [loading, setLoadingState] = useState(true)
+    const [seasonId,    setSeasonId] = useState(props.match.params.id)
+    const [error,       setError] = useState<RequestError | undefined>(undefined)
+    const [loading,     setLoadingState] = useState(true)
     const [seasonStats, setSeasonStats] = useState<UserStatsResponse>(UserStatsMockService.getStatsWithoutPromise(seasonId))
     const [spinnerColor] = useState('#61dafb')
 
     useEffect(() => {
+        setLoadingState(true)
+        setSeasonStats(UserStatsMockService.getStatsWithoutPromise('3'))
         UserStatsService.getStats(seasonId)
             .then(res => {
                 setSeasonStats(res)
@@ -30,7 +32,7 @@ const MainPage: FC<IMainPageProps> = (props: IMainPageProps) => {
               setLoadingState(false)
               setError(new RequestError(0, "Could not retrieve stats. Try again later."))
             })
-    }, [seasonId, setLoadingState])
+    }, [seasonId])
 
     const spinnerCss = `
       margin: 0;
@@ -40,22 +42,20 @@ const MainPage: FC<IMainPageProps> = (props: IMainPageProps) => {
 
     return (
         <div className="MainPage">
-            <Header />
+            <Header />  
             {
                 error && <ErrorContainer message={error.message} />
             }
 
             <ClipLoader color={spinnerColor} loading={loading} size={150} css={spinnerCss} />
-            <div className={loading || error ? "blurred" : ""}>
-                <UserList enabled={loading || !(!error)} onSeasonIdChange={setSeasonId} userStats={seasonStats} />
-            </div>
+            <UserList enabled={!loading && (error == null)} onSeasonIdChange={setSeasonId} userStats={seasonStats} />
 
             <Footer />
         </div>
     )
 }
 
-export interface IMainPageProps extends RouteComponentProps<{ id: string }> {
+export interface IMainPageProps extends RouteComponentProps<{ id?: string }> {
 
 }
 
diff --git a/frontend/src/services/UserStatsService.ts b/frontend/src/services/UserStatsService.ts
index 2d5d2a5..cbdc4ed 100644
--- a/frontend/src/services/UserStatsService.ts
+++ b/frontend/src/services/UserStatsService.ts
@@ -4,8 +4,7 @@ import UserStatsResponse from "../models/UserStatsResponse";
 export default class UserStatsService {
 
   private static apiURL = 'https://api.tsotr.humenius.me/stats'
-  // private static apiURL = 'http://localhost:3500/stats'
-  //private static apiURL = 'https://mock.codes/501'
+  //private static apiURL = 'http://localhost:3500/stats'
 
   private static requestInit: RequestInit = {
     method: 'GET',
@@ -14,13 +13,13 @@ export default class UserStatsService {
     },
   };
 
-  public static async getStats(seasonId: string): Promise<UserStatsResponse> {
-    return fetch(`${this.apiURL}/season/${seasonId}`, this.requestInit)
+  public static async getStats(seasonId?: string): Promise<UserStatsResponse> {
+    return fetch(`${this.apiURL}/season/${seasonId ?? ''}`, this.requestInit)
         .then(res => UserStatsService.checkResponse(res))
         .then(data => data.json())
         .then(data => {
-          data.dates.start = new Date(data.dates.start)
-          data.dates.end = new Date(data.dates.end)
+          data.dates.start = data.dates.start ? new Date(data.dates.start) : undefined
+          data.dates.end = data.dates.end ? new Date(data.dates.end) : undefined
           return data
         })
   }
@@ -32,70 +31,4 @@ export default class UserStatsService {
     }
     return response;
   }
-}
-
-// const checkResponse = <T extends Response>(response: T): T => {
-//   if (!response.ok) {
-//     console.log(response);
-//     let error = new RequestError(response.statusText);
-//     error.response = response;
-//     throw error;
-//   }
-//   return response;
-// }
-//
-// const useApiService = <T>(url: string, method: string = 'GET'): { response: T | null; error: RequestError | null } => {
-//   const baseUrl = "https://api.tsotr.humenius.me"
-//   const [response, setResponse] = useState<T | null>(null)
-//   const [error, setError] = useState<RequestError | null>(null)
-//   const requestInit = {
-//     method: method,
-//     headers: {
-//       'Content-Type': 'application/json'
-//     }
-//   }
-//
-//   useEffect(() => {
-//     const fetchData = async (): Promise<void> => {
-//       const result = await fetch(`${baseUrl}${url}`, requestInit)
-//                           .then(res => checkResponse(res))
-//                           .then(data => data.json())
-//                           .catch(err => setError(err))
-//       setResponse(result)
-//     }
-//
-//     fetchData()
-//   }, [url])
-//
-//   return { response, error }
-// }
-//
-// // const seasonStatsQuery = (seasonId: number): { response: UserStatsResponse | null; error: RequestError | null } => {
-// //   const baseUrl = "https://api.tsotr.humenius.me/stats/season/"
-// //   const [response, setResponse] = useState<UserStatsResponse | null>(null)
-// //   const [error, setError] = useState<RequestError | null>(null)
-// //   const requestInit = {
-// //     method: 'GET',
-// //     headers: {
-// //       'Content-Type': 'application/json'
-// //     }
-// //   }
-// //
-// //   useEffect(() => {
-// //     const fetchData = async (): Promise<void> => {
-// //       const result = await fetch(baseUrl, requestInit)
-// //           .then(res => checkResponse(res))
-// //           .then(data => data.json())
-// //           .catch(err => setError(err))
-// //       setResponse(result)
-// //     }
-// //
-// //     fetchData()
-// //   }, [seasonId])
-// //
-// //   return { response, error }
-// // }
-//
-// const currentSeasonStatsQuery = useApiService<UserStatsResponse>('/stats')
-//
-// export default useApiService;
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/frontend/yarn.lock b/frontend/yarn.lock
index 4699d81..b6decf3 100644
--- a/frontend/yarn.lock
+++ b/frontend/yarn.lock
@@ -1667,11 +1667,6 @@
   resolved "https://registry.yarnpkg.com/@types/history/-/history-4.7.8.tgz#49348387983075705fe8f4e02fb67f7daaec4934"
   integrity sha512-S78QIYirQcUoo6UJZx9CSP0O2ix9IaeAXwQi26Rhr/+mg7qqPy8TzaxHSUut7eGjL8WmLccT7/MXf304WjqHcA==
 
-"@types/isomorphic-fetch@^0.0.35":
-  version "0.0.35"
-  resolved "https://registry.yarnpkg.com/@types/isomorphic-fetch/-/isomorphic-fetch-0.0.35.tgz#c1c0d402daac324582b6186b91f8905340ea3361"
-  integrity sha512-DaZNUvLDCAnCTjgwxgiL1eQdxIKEpNLOlTNtAgnZc50bG2copGhRrFN9/PxPBuJe+tZVLCbQ7ls0xveXVRPkvw==
-
 "@types/istanbul-lib-coverage@*", "@types/istanbul-lib-coverage@^2.0.0":
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.3.tgz#4ba8ddb720221f432e443bd5f9117fd22cfd4762"
@@ -4806,11 +4801,6 @@ fb-watchman@^2.0.0:
   dependencies:
     bser "2.1.1"
 
-fetch-retry-ts@^1.1.23:
-  version "1.1.23"
-  resolved "https://registry.yarnpkg.com/fetch-retry-ts/-/fetch-retry-ts-1.1.23.tgz#7659974215c7a66b9bb81c006e5acee34d932ca8"
-  integrity sha512-UwqrMGfDPRa60etXl1HkDgIhY9k2AoB/Qa41/U2thzHtA/NVHGSmn037dw4iOg62ccyX2imtkU8SFfSwxLLEYA==
-
 figgy-pudding@^3.5.1:
   version "3.5.2"
   resolved "https://registry.yarnpkg.com/figgy-pudding/-/figgy-pudding-3.5.2.tgz#b4eee8148abb01dcf1d1ac34367d59e12fa61d6e"
@@ -6179,14 +6169,6 @@ isobject@^3.0.0, isobject@^3.0.1:
   resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
   integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
 
-isomorphic-fetch@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-3.0.0.tgz#0267b005049046d2421207215d45d6a262b8b8b4"
-  integrity sha512-qvUtwJ3j6qwsF3jLxkZ72qCgjMysPzDfeV240JHiGZsANBYd+EEuu35v7dfrJ9Up0Ak07D7GGSkGhCHTqg/5wA==
-  dependencies:
-    node-fetch "^2.6.1"
-    whatwg-fetch "^3.4.1"
-
 isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
@@ -7522,11 +7504,6 @@ no-case@^3.0.4:
     lower-case "^2.0.2"
     tslib "^2.0.3"
 
-node-fetch@^2.6.1:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
-  integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
-
 node-forge@^0.10.0:
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.10.0.tgz#32dea2afb3e9926f02ee5ce8794902691a676bf3"
@@ -9241,15 +9218,14 @@ react-dev-utils@^10.2.1:
     strip-ansi "6.0.0"
     text-table "0.2.0"
 
-react-dom@^16.13.1:
-  version "16.14.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.14.0.tgz#7ad838ec29a777fb3c75c3a190f661cf92ab8b89"
-  integrity sha512-1gCeQXDLoIqMgqD3IO2Ah9bnf0w9kzhwN5q4FGnHZ67hBm9yePzB5JJAIQCc8x3pFnNlwFq4RidZggNAAkzWWw==
+react-dom@17.0.0:
+  version "17.0.0"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-17.0.0.tgz#f8266e4d9861584553ccbd186d596a1c7dd8dcb4"
+  integrity sha512-OGnFbxCjI2TMAZYMVxi4hqheJiN8rCEVVrL7XIGzCB6beNc4Am8M47HtkvxODZw9QgjmAPKpLba9FTu4fC1byA==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
-    prop-types "^15.6.2"
-    scheduler "^0.19.1"
+    scheduler "^0.20.0"
 
 react-error-overlay@^6.0.7:
   version "6.0.8"
@@ -9362,14 +9338,13 @@ react-spinners@^0.10.4:
   dependencies:
     "@emotion/core" "^10.0.35"
 
-react@^16.13.1:
-  version "16.14.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.14.0.tgz#94d776ddd0aaa37da3eda8fc5b6b18a4c9a3114d"
-  integrity sha512-0X2CImDkJGApiAlcf0ODKIneSwBPhqJawOa5wCtKbu7ZECrmS26NvtSILynQ66cgkT/RJ4LidJOc3bUESwmU8g==
+react@17.0.0:
+  version "17.0.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-17.0.0.tgz#ad96d5fa1a33bb9b06d0cc52672f7992d84aa662"
+  integrity sha512-rG9bqS3LMuetoSUKHN8G3fMNuQOePKDThK6+2yXFWtoeTDLVNh/QCaxT+Jr+rNf4lwNXpx+atdn3Aa0oi8/6eQ==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
-    prop-types "^15.6.2"
 
 read-pkg-up@^2.0.0:
   version "2.0.0"
@@ -9864,10 +9839,10 @@ saxes@^3.1.9:
   dependencies:
     xmlchars "^2.1.1"
 
-scheduler@^0.19.1:
-  version "0.19.1"
-  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.19.1.tgz#4f3e2ed2c1a7d65681f4c854fa8c5a1ccb40f196"
-  integrity sha512-n/zwRWRYSUj0/3g/otKDRPMh6qv2SYMWNq85IEa8iZyAv8od9zDYpGSnpBEjNgcMNq6Scbu5KfIPxNF72R/2EA==
+scheduler@^0.20.0:
+  version "0.20.1"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.20.1.tgz#da0b907e24026b01181ecbc75efdc7f27b5a000c"
+  integrity sha512-LKTe+2xNJBNxu/QhHvDR14wUXHRQbVY5ZOYpOGWRzhydZUqrLb2JBvLPY7cAqFmqrWuDED0Mjk7013SZiOz6Bw==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
@@ -11335,7 +11310,7 @@ whatwg-encoding@^1.0.1, whatwg-encoding@^1.0.3, whatwg-encoding@^1.0.5:
   dependencies:
     iconv-lite "0.4.24"
 
-whatwg-fetch@^3.0.0, whatwg-fetch@^3.4.1:
+whatwg-fetch@^3.0.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.5.0.tgz#605a2cd0a7146e5db141e29d1c62ab84c0c4c868"
   integrity sha512-jXkLtsR42xhXg7akoDKvKWE40eJeI+2KZqcp2h3NsOrRnDvtWX36KcKl30dy+hxECivdk2BVUHVNrPtoMBUx6A==