diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
index e1573a9..3165364 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
@@ -1,23 +1,36 @@
 package ch.zhaw.projekt2.turnierverwaltung;
 
-import java.util.GregorianCalendar;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
 
 public class Player extends Person implements Participant{
 
-    private GregorianCalendar dateOfBirth;
+    private LocalDate dateOfBirth;
 
     public Player(String firstName, String name, String phoneNumber, String dateOfBirth) throws InvalidNameException, InvalidPhoneNumberException {
         super(firstName, name, phoneNumber);
         setDateOfBirth(dateOfBirth);
     }
 
-    public GregorianCalendar getDateOfBirth() {
+    public LocalDate getDateOfBirth() {
         return dateOfBirth;
     }
 
+    public String getFormatedDateOfBirth(){
+        try{
+            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd.MM.yyyy");
+            return dateOfBirth.format(formatter);
+        } catch (Exception e) {
+           //todo handle and logging
+            return "";
+        }
+    }
+
     public void setDateOfBirth(String dateOfBirth) {
         String[] date = dateOfBirth.split("\\.");
-        this.dateOfBirth = new GregorianCalendar(Integer.valueOf(date[2]), Integer.valueOf(date[1]), Integer.valueOf(date[0]));
+        this.dateOfBirth = LocalDate.of(Integer.valueOf(date[2]), Integer.valueOf(date[1]), Integer.valueOf(date[0]));
     }
 
     @Override
diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java
index d684b1f..744ba05 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Tournament.java
@@ -31,7 +31,7 @@ public class Tournament implements Serializable {
     public void addParticipant(Participant newParticipant) throws ParticipantExistsException {
         for(Participant participant : participants){
             if(participant.equals(newParticipant)){
-                throw new ParticipantExistsException("A Participant with the same Name exists already.");
+                participants.remove(participant);
             }
         }
         participants.add(newParticipant);
@@ -41,6 +41,7 @@ public class Tournament implements Serializable {
         if(!participants.contains(participant)){
             throw new ParticipantNotExistsException("The given Participant is not part of this Tournament");
         }
+        participants.remove(participant);
     }
 
     public ObservableList<Participant> getParticipants() {
diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
index 47708ca..d284219 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
@@ -79,7 +79,7 @@ public class TournamentDecorator implements IsObservable{
         }
     }
 
-    public void addPlayer(String firstName, String name, String phoneNumber, String dateOfBirth){
+    public void savePlayer(String firstName, String name, String phoneNumber, String dateOfBirth){
         try {
             tournament.addParticipant(new Player(firstName, name, phoneNumber, dateOfBirth));
             informListener();
@@ -92,6 +92,15 @@ public class TournamentDecorator implements IsObservable{
         }
     }
 
+    public void deleteParticipant(Participant participant){
+        try {
+            tournament.removeParticipant(participant);
+            informListener();
+        } catch (Tournament.ParticipantNotExistsException e) {
+            e.printStackTrace(); //TODO handle and logging
+        }
+    }
+
     public void informListener() {
         for(IsObserver observer : listener) {
             observer.update();
diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/main/participantAddFormular/ParticipantFormularController.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/main/participantAddFormular/ParticipantFormularController.java
index a6e2c4f..521334f 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/main/participantAddFormular/ParticipantFormularController.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/main/participantAddFormular/ParticipantFormularController.java
@@ -2,6 +2,7 @@ package ch.zhaw.projekt2.turnierverwaltung.main.participantAddFormular;
 
 import ch.zhaw.projekt2.turnierverwaltung.FXController;
 import ch.zhaw.projekt2.turnierverwaltung.Participant;
+import ch.zhaw.projekt2.turnierverwaltung.Player;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
@@ -39,7 +40,11 @@ public class ParticipantFormularController extends FXController {
     private Label newParticipantFormularTitle;
 
     @FXML
-    private Button openBtn;
+    private Button closeBtn;
+
+    @FXML
+    private Button deleteBtn;
+
 
     @FXML
     private Label participantListTitle;
@@ -63,8 +68,12 @@ public class ParticipantFormularController extends FXController {
     private Button saveBtn;
 
     @FXML
-    void addParticipant(ActionEvent event) {
-        getTournamentDecorator().addPlayer(firstNameTextField.getText(), participantNameTextField.getText(), phoneNumberTextField.getText(), birthDateTextField.getText());
+    void changedSelection(MouseEvent event){
+        Player participant = (Player) participantListView.getSelectionModel().getSelectedItems().get(0);
+        participantNameTextField.setText(participant.getName());
+        firstNameTextField.setText(participant.getFirstName());
+        phoneNumberTextField.setText(participant.getPhoneNumber());
+        birthDateTextField.setText(participant.getFormatedDateOfBirth());
     }
 
     @FXML
@@ -73,7 +82,20 @@ public class ParticipantFormularController extends FXController {
     }
 
     @FXML
-    void save(ActionEvent event) {
+    void saveParticipant(ActionEvent event) {
+        getTournamentDecorator().savePlayer(firstNameTextField.getText(), participantNameTextField.getText(), phoneNumberTextField.getText(), birthDateTextField.getText());
+    }
+
+
+    @FXML
+    void delete(ActionEvent event) {
+        System.out.println("delete");
+        Participant participant = participantListView.getSelectionModel().getSelectedItems().get(0);
+        getTournamentDecorator().deleteParticipant(participant);
+    }
+
+    @FXML
+    void close(ActionEvent event) {
 
     }
 
diff --git a/app/src/main/resources/ch/zhaw/projekt2/turnierverwaltung/participantAddFormular/participantFormular.fxml b/app/src/main/resources/ch/zhaw/projekt2/turnierverwaltung/participantAddFormular/participantFormular.fxml
index 0de5bb7..a5a648a 100644
--- a/app/src/main/resources/ch/zhaw/projekt2/turnierverwaltung/participantAddFormular/participantFormular.fxml
+++ b/app/src/main/resources/ch/zhaw/projekt2/turnierverwaltung/participantAddFormular/participantFormular.fxml
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
-
 <?import javafx.geometry.Insets?>
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.Label?>
@@ -25,19 +24,23 @@
                   <Insets bottom="20.0" />
                </VBox.margin>
             </Label>
-            <ListView fx:id="participantListView" prefHeight="200.0" prefWidth="200.0" VBox.vgrow="ALWAYS">
+            <ListView fx:id="participantListView" onMouseClicked="#changedSelection" prefHeight="200.0" prefWidth="200.0" VBox.vgrow="ALWAYS">
                <VBox.margin>
                   <Insets />
                </VBox.margin>
             </ListView>
             <HBox alignment="CENTER" prefHeight="100.0" prefWidth="200.0" VBox.vgrow="ALWAYS">
                <children>
-                  <Button fx:id="saveBtn" mnemonicParsing="false" onAction="#save" text="Speichern">
+                  <Button fx:id="closeBtn" mnemonicParsing="false" onAction="#close" text="Schliessen">
+                     <HBox.margin>
+                        <Insets right="40.0" />
+                     </HBox.margin>
+                  </Button>
+                  <Button fx:id="deleteBtn" mnemonicParsing="false" onAction="#delete" text="Löschen">
                      <HBox.margin>
                         <Insets right="40.0" />
                      </HBox.margin>
                   </Button>
-                  <Button fx:id="openBtn" mnemonicParsing="false" text="Bearbeiten" />
                </children>
             </HBox>
          </children>
@@ -52,7 +55,7 @@
       </Separator>
       <VBox fx:id="changeBtn" alignment="TOP_CENTER" onDragDetected="#changeParticipant" prefHeight="331.0" prefWidth="308.0" HBox.hgrow="ALWAYS">
          <children>
-            <Label fx:id="newParticipantFormularTitle" text="Neuer Teilnehmer">
+            <Label fx:id="newParticipantFormularTitle" text="Teilnehmer ändern/erstellen">
                <font>
                   <Font name="System Bold" size="21.0" />
                </font>
@@ -96,7 +99,7 @@
                </children>
             </GridPane>
             <Separator prefWidth="200.0" />
-            <Button fx:id="addBtn" alignment="TOP_LEFT" mnemonicParsing="false" onAction="#addParticipant" text="Erstellen" VBox.vgrow="ALWAYS">
+            <Button fx:id="saveBtn" alignment="TOP_LEFT" mnemonicParsing="false" onAction="#saveParticipant" text="Speichern" VBox.vgrow="ALWAYS">
                <VBox.margin>
                   <Insets bottom="10.0" top="30.0" />
                </VBox.margin>