diff --git a/js/components/GroupStage.js b/js/components/GroupStage.js
new file mode 100644
index 0000000..76f371e
--- /dev/null
+++ b/js/components/GroupStage.js
@@ -0,0 +1,100 @@
+import {Button, Card, CardBody, Col, Collapse, Row, Table} from 'reactstrap';
+import {Match} from './Match';
+import React, {Component} from 'react';
+import {getGroup} from '../redux/tournamentApi';
+import {notify} from 'react-notify-toast';
+
+export default class GroupStage extends Component {
+    constructor(props) {
+        super(props);
+        this.state = {showMatches: this.props.showMatches};
+        this.toggleShowMatches = this.toggleShowMatches.bind(this);
+    }
+
+    toggleShowMatches() {
+        this.setState({showMatches: !this.state.showMatches});
+    }
+
+    render() {
+        return (<div className='py-5 px-5'>
+            <h1 className='custom-font'>
+                Gruppenphase
+                <ShowMatchesToggleButton show={this.state.showMatches} toggle={this.toggleShowMatches}/>
+            </h1>
+            <Row className='mt-3'>
+                {this.props.groups.map(group => <Group group={group} key={group.id} isSignedIn={this.props.isSignedIn}
+                    isOwner={this.props.isOwner} showMatches={this.state.showMatches}/>)}
+            </Row>
+        </div>);
+    }
+}
+
+function ShowMatchesToggleButton(props) {
+    return (<Button onClick={props.toggle} className='float-right default-font-family'>
+        {props.show ? 'Spiele ausblenden' : 'Spiele anzeigen'}
+    </Button>);
+}
+
+class Group extends Component {
+    constructor(props) {
+        super(props);
+        this.state = props.group;
+        this.reload = this.reload.bind(this);
+        this.onReloadSuccess = this.onReloadSuccess.bind(this);
+        this.onReloadError = this.onReloadError.bind(this);
+    }
+
+    reload() {
+        getGroup(this.state.id, this.onReloadSuccess, this.onReloadError);
+    }
+
+    onReloadSuccess(status, updatedGroup) {
+        this.setState(updatedGroup);
+    }
+
+    onReloadError() {
+        notify.show('Die Gruppe konnte nicht aktualisiert werden.', 'warning', 2000);
+    }
+
+    render() {
+        return (<Col className='minw-25'>
+            <Card>
+                <CardBody>
+                    <h3 className='custom-font'>Gruppe {this.state.number}</h3>
+                    <Collapse isOpen={this.props.showMatches}>
+                        {this.state.matches.map((match => (
+                            <Match match={match} isSignedIn={this.props.isSignedIn} isOwner={this.props.isOwner}
+                                onChange={this.reload} key={match.id}/>)))}
+                    </Collapse>
+                    <GroupScoresTable scores={this.state.scores}/>
+                </CardBody>
+            </Card>
+        </Col>);
+    }
+}
+
+function GroupScoresTable(props) {
+    return (<Table className='mt-4' striped size='sm' responsive>
+        <thead>
+            <tr>
+                <th>Team</th>
+                <th>Punkte</th>
+                <th>erzielt</th>
+                <th>kassiert</th>
+            </tr>
+        </thead>
+        <tbody>
+            {props.scores.map(groupScore => <GroupScoresTableRow score={groupScore} key={groupScore.id}/>)}
+        </tbody>
+    </Table>);
+}
+
+
+function GroupScoresTableRow(props) {
+    return (<tr>
+        <td>{props.score.team.name}</td>
+        <td>{props.score.group_points}</td>
+        <td>{props.score.received_points}</td>
+        <td>{props.score.scored_points}</td>
+    </tr>);
+}
diff --git a/js/components/Match.js b/js/components/Match.js
index 95293d8..e9e01b8 100644
--- a/js/components/Match.js
+++ b/js/components/Match.js
@@ -70,6 +70,7 @@ export class Match extends React.Component {
         updatedMatch.team1.score = scoreTeam1;
         updatedMatch.team2.score = scoreTeam2;
         this.setState({match: updatedMatch});
+        this.props.onChange !== undefined && this.props.onChange();
     }
 
     getMatchFinishedMessage() {
diff --git a/js/components/PlayoffStages.js b/js/components/PlayoffStages.js
new file mode 100644
index 0000000..5387bab
--- /dev/null
+++ b/js/components/PlayoffStages.js
@@ -0,0 +1,18 @@
+import {Stage} from './Stage';
+import React from 'react';
+
+export function PlayoffStages(props) {
+    return (<div>
+        {props.playoffStages.map(stage => <Stage isSignedIn={props.isSignedIn} isOwner={props.isOwner}
+            level={getLevelName(stage.level)} matches={stage.matches} key={stage.level}/>)}
+    </div>);
+}
+
+function getLevelName(levelNumber) {
+    const names = ['Finale', 'Halbfinale', 'Viertelfinale', 'Achtelfinale'];
+    if (levelNumber < names.length) {
+        return names[levelNumber];
+    } else {
+        return Math.pow(2, levelNumber) + 'tel-Finale';
+    }
+}
diff --git a/js/components/Stage.js b/js/components/Stage.js
new file mode 100644
index 0000000..32a128c
--- /dev/null
+++ b/js/components/Stage.js
@@ -0,0 +1,18 @@
+import {Col, Container, Row} from 'reactstrap';
+import {Match} from './Match';
+import React from 'react';
+
+export function Stage(props) {
+    const {isSignedIn, isOwner} = props;
+
+    return (<div>
+        <Container className='py-5'>
+            <h1 className='custom-font'>{props.level}</h1>
+            <Row>
+                {props.matches.map((match => (
+                    <Col className='minw-25' key={match.id}><Match match={match} isSignedIn={isSignedIn}
+                        isOwner={isOwner}/></Col>)))}
+            </Row>
+        </Container>
+    </div>);
+}
diff --git a/js/redux/tournamentApi.js b/js/redux/tournamentApi.js
new file mode 100644
index 0000000..92e7d72
--- /dev/null
+++ b/js/redux/tournamentApi.js
@@ -0,0 +1,100 @@
+import {getRequest} from './backendApi';
+import {getState} from '../api';
+
+export function getTournament(code, successCallback, errorCallback) {
+    getRequest(getState(), '/tournaments/' + code)
+        .then(response => {
+            successCallback(response.status, convertTournament(response.data));
+        })
+        .catch(errorCallback);
+}
+
+export function getGroup(groupId, successCallback, errorCallback) {
+    getRequest(getState(), '/groups/' + groupId)
+        .then(response => {
+            successCallback(response.status, convertGroup(response.data));
+        })
+        .catch(errorCallback);
+}
+
+function convertTournament(apiTournament) {
+    let groupStage = null;
+    const playoffStages = [];
+    for (const stage of apiTournament.stages) {
+        if (stage.groups.length > 0) {
+            // group stage
+            groupStage = {groups: stage.groups.map(group => convertGroup(group))};
+        } else {
+            // playoff stage
+            playoffStages.push({
+                id: stage.id, level: stage.level, matches: stage.matches.map(match => convertMatch(match, false))
+            });
+        }
+    }
+    return {
+        id: apiTournament.id,
+        code: apiTournament.code,
+        description: apiTournament.description,
+        name: apiTournament.name,
+        isPublic: apiTournament.public,
+        ownerUsername: apiTournament.owner_username,
+        groupStage: groupStage,
+        playoffStages: playoffStages
+    };
+}
+
+function convertGroup(apiGroup) {
+    return {
+        id: apiGroup.id,
+        number: apiGroup.number,
+        scores: apiGroup.group_scores,
+        matches: apiGroup.matches.map(match => convertMatch(match, true))
+    };
+}
+
+function convertMatch(apiMatch, allowUndecided) {
+    const result = {
+        id: apiMatch.id, state: apiMatch.state, allowUndecided: allowUndecided,
+        winnerTeamId: apiMatch.winner === null ? null : apiMatch.winner.id
+    };
+
+    if (apiMatch.match_scores.length === 2) {
+        result.team1 = {
+            name: apiMatch.match_scores[0].team.name,
+            id: apiMatch.match_scores[0].team.id,
+            score: apiMatch.match_scores[0].points,
+            scoreId: apiMatch.match_scores[0].id
+        };
+        result.team2 = {
+            name: apiMatch.match_scores[1].team.name,
+            id: apiMatch.match_scores[1].team.id,
+            score: apiMatch.match_scores[1].points,
+            scoreId: apiMatch.match_scores[1].id
+        };
+    } else if (apiMatch.match_scores.length === 1) {
+        result.team1 = {
+            name: apiMatch.match_scores[0].team.name,
+            id: apiMatch.match_scores[0].team.id,
+            score: apiMatch.match_scores[0].points,
+            scoreId: apiMatch.match_scores[0].id
+        };
+        result.team2 = {
+            name: 'TBD',
+            id: null,
+            score: 0
+        };
+    } else {
+        result.team1 = {
+            name: 'TBD',
+            id: null,
+            score: 0
+        };
+        result.team2 = {
+            name: 'TBD',
+            id: null,
+            score: 0
+        };
+    }
+
+    return result;
+}
diff --git a/pages/tournament.js b/pages/tournament.js
index bd0de1b..fcffa8e 100644
--- a/pages/tournament.js
+++ b/pages/tournament.js
@@ -1,25 +1,26 @@
 import Head from 'next/head';
 import React from 'react';
 import {connect} from 'react-redux';
-import {Col, Container, ListGroup, ListGroupItem, Row} from 'reactstrap';
+import {Container, ListGroup, ListGroupItem} from 'reactstrap';
 
 import {ErrorPageComponent} from '../js/components/ErrorComponents';
 import {Footer} from '../js/components/Footer';
 import {TurniereNavigation} from '../js/components/Navigation';
 import {BigImage} from '../js/components/BigImage';
-import {getState} from '../js/api';
-import {getRequest} from '../js/redux/backendApi';
 
 import 'bootstrap/dist/css/bootstrap.min.css';
 
 import '../static/css/everypage.css';
 import '../static/css/tournament.css';
-import {Match} from '../js/components/Match';
+import {getTournament} from '../js/redux/tournamentApi';
+import {PlayoffStages} from '../js/components/PlayoffStages';
+import GroupStage from '../js/components/GroupStage';
 
 class PrivateTournamentPage extends React.Component {
     render() {
-        const {id, description, isPublic, code, ownerUsername, playoffStages} = this.props.tournament;
+        const {id, description, isPublic, code, ownerUsername, playoffStages, groupStage} = this.props.tournament;
         const {isSignedIn, username} = this.props;
+        const isOwner = username === ownerUsername;
 
         // TODO: Change href-prop of the anchor tag to contain the tournament code
         return (<div className='pb-5'>
@@ -35,9 +36,11 @@ class PrivateTournamentPage extends React.Component {
                 </ListGroup>
             </Container>
             <div className='stages pt-5'>
-                {playoffStages.map(stage => <Stage isSignedIn={isSignedIn} isOwner={username === ownerUsername}
-                    level={getLevelName(stage.level)} matches={stage.matches}
-                    key={stage.level}/>)}
+                {groupStage != null &&
+                <div><GroupStage groups={groupStage.groups} isSignedIn={isSignedIn} isOwner={isOwner}
+                    showMatches={playoffStages !== null}/></div>}
+                <PlayoffStages playoffStages={playoffStages} isSignedIn={isSignedIn}
+                    isOwner={isOwner}/>
             </div>
         </div>);
     }
@@ -60,112 +63,6 @@ function EditButton(props) {
     }
 }
 
-function getLevelName(levelNumber) {
-    const names = ['Finale', 'Halbfinale', 'Viertelfinale', 'Achtelfinale'];
-    if (levelNumber < names.length) {
-        return names[levelNumber];
-    } else {
-        return Math.pow(2, levelNumber) + 'tel-Finale';
-    }
-}
-
-function Stage(props) {
-    const {isSignedIn, isOwner} = props;
-
-    return (<div>
-        <Container className='py-5'>
-            <h1 className='custom-font'>{props.level}</h1>
-            <Row>
-                {props.matches.map((match => (
-                    <Col className='minw-25' key={match.id}><Match match={match} isSignedIn={isSignedIn}
-                        isOwner={isOwner}/></Col>)))}
-            </Row>
-        </Container>
-    </div>);
-}
-
-function convertTournament(apiTournament) {
-    let groupStage = null;
-    const playoffStages = [];
-    for (const stage of apiTournament.stages) {
-        if (stage.groups.length > 0) {
-            // group stage
-            groupStage = {groups: stage.groups.map(group => convertGroup(group))};
-        } else {
-            // playoff stage
-            playoffStages.push({
-                id: stage.id, level: stage.level, matches: stage.matches.map(match => convertMatch(match, false))
-            });
-        }
-    }
-    return {
-        id: apiTournament.id,
-        code: apiTournament.code,
-        description: apiTournament.description,
-        name: apiTournament.name,
-        isPublic: apiTournament.public,
-        ownerUsername: apiTournament.owner_username,
-        groupStage: groupStage,
-        playoffStages: playoffStages
-    };
-}
-
-function convertGroup(apiGroup) {
-    return {
-        id: apiGroup.id,
-        number: apiGroup.number,
-        scores: apiGroup.group_scores,
-        matches: apiGroup.matches.map(match => convertMatch(match, true))
-    };
-}
-
-function convertMatch(apiMatch, allowUndecided) {
-    const result = {
-        id: apiMatch.id, state: apiMatch.state, allowUndecided: allowUndecided,
-        winnerTeamId: apiMatch.winner === null ? null : apiMatch.winner.id
-    };
-
-    if (apiMatch.match_scores.length === 2) {
-        result.team1 = {
-            name: apiMatch.match_scores[0].team.name,
-            id: apiMatch.match_scores[0].team.id,
-            score: apiMatch.match_scores[0].points,
-            scoreId: apiMatch.match_scores[0].id
-        };
-        result.team2 = {
-            name: apiMatch.match_scores[1].team.name,
-            id: apiMatch.match_scores[1].team.id,
-            score: apiMatch.match_scores[1].points,
-            scoreId: apiMatch.match_scores[1].id
-        };
-    } else if (apiMatch.match_scores.length === 1) {
-        result.team1 = {
-            name: apiMatch.match_scores[0].team.name,
-            id: apiMatch.match_scores[0].team.id,
-            score: apiMatch.match_scores[0].points,
-            scoreId: apiMatch.match_scores[0].id
-        };
-        result.team2 = {
-            name: 'TBD',
-            id: null,
-            score: 0
-        };
-    } else {
-        result.team1 = {
-            name: 'TBD',
-            id: null,
-            score: 0
-        };
-        result.team2 = {
-            name: 'TBD',
-            id: null,
-            score: 0
-        };
-    }
-
-    return result;
-}
-
 class Main extends React.Component {
     static async getInitialProps({query}) {
         return {query};
@@ -177,22 +74,24 @@ class Main extends React.Component {
         this.state = {
             tournament: null
         };
+        this.onTournamentRequestSuccess = this.onTournamentRequestSuccess.bind(this);
+        this.onTournamentRequestError = this.onTournamentRequestError.bind(this);
     }
 
     componentDidMount() {
-        const code = this.props.query.code;
+        getTournament(this.props.query.code, this.onTournamentRequestSuccess, this.onTournamentRequestError);
+    }
 
-        getRequest(getState(), '/tournaments/' + code)
-            .then(response => {
-                this.setState({status: response.status, tournament: convertTournament(response.data)});
-            })
-            .catch(err => {
-                if (err.response) {
-                    this.setState({status: err.response.status});
-                } else {
-                    this.setState({status: -1});
-                }
-            });
+    onTournamentRequestSuccess(requestStatus, tournament) {
+        this.setState({status: requestStatus, tournament: tournament});
+    }
+
+    onTournamentRequestError(error) {
+        if (error.response) {
+            this.setState({status: error.response.status});
+        } else {
+            this.setState({status: -1});
+        }
     }
 
 
diff --git a/static/css/everypage.css b/static/css/everypage.css
index 4943630..5c46239 100644
--- a/static/css/everypage.css
+++ b/static/css/everypage.css
@@ -7,6 +7,10 @@
     font-family: Halt, sans-serif;
 }
 
+.default-font-family {
+    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+}
+
 .navbar-brand {
     font-family: Halt, sans-serif;
     font-size: 2em;
@@ -67,4 +71,4 @@ footer {
     background: url("/static/images/tennis-blurred.jpg") no-repeat top;
     background-size: cover;
     min-height: 100vh;
-}
\ No newline at end of file
+}
diff --git a/static/css/tournament.css b/static/css/tournament.css
index b00bdef..63b476a 100644
--- a/static/css/tournament.css
+++ b/static/css/tournament.css
@@ -6,7 +6,7 @@
     text-decoration: line-through;
 }
 
-.stages > div:nth-child(odd) {
+.stages > div > div:nth-child(odd) {
     background-color: #f8f8f8;
 }
 
@@ -25,4 +25,4 @@
 
 .scoreInput {
     width: 11rem;
-}
\ No newline at end of file
+}