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 29bb2c6..20c78d0 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
@@ -9,7 +9,7 @@ public class Player extends Person implements Participant{
 
     private LocalDate dateOfBirth;
 
-    public Player(String firstName, String name, String phoneNumber, String dateOfBirth) throws InvalidNameException, InvalidPhoneNumberException {
+    public Player(String firstName, String name, String phoneNumber, String dateOfBirth) throws InvalidNameException, InvalidPhoneNumberException, InvalidDateException {
         super(firstName, name, phoneNumber);
         setDateOfBirth(dateOfBirth);
     }
@@ -28,10 +28,16 @@ public class Player extends Person implements Participant{
         }
     }
 
-    public void setDateOfBirth(String dateOfBirth) {
+    public void setDateOfBirth(String dateOfBirth) throws InvalidDateException {
         if(dateOfBirth.length() > 0) {
             String[] date = dateOfBirth.split("\\.");
-            this.dateOfBirth = LocalDate.of(Integer.valueOf(date[2]), Integer.valueOf(date[1]), Integer.valueOf(date[0]));
+            try{
+                this.dateOfBirth = LocalDate.of(Integer.valueOf(date[2]), Integer.valueOf(date[1]), Integer.valueOf(date[0]));
+            } catch (NumberFormatException e) {
+                e.printStackTrace();
+                throw new InvalidDateException("Date invalid");
+            }
+
         } else {
             dateOfBirth = null;
         }
@@ -52,4 +58,16 @@ public class Player extends Person implements Participant{
         setDateOfBirth(player.getDateOfBirth());
         setPhoneNumber(player.getPhoneNumber());
     }
+
+    public class InvalidDateException extends Exception {
+        public InvalidDateException() {
+            super();
+        }
+
+        public InvalidDateException(String errorMessage) {
+            super(errorMessage);
+        }
+
+    }
+
 }
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 28d6bac..55dc2d7 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/TournamentDecorator.java
@@ -128,6 +128,9 @@ public class TournamentDecorator implements IsObservable{
         } catch (Person.InvalidPhoneNumberException e) {
             e.printStackTrace(); //TODO handle and logging
             factoryDecorator.printMessageToFooter("Invalide Telefonnummer",true);
+        } catch (Player.InvalidDateException e) {
+            e.printStackTrace();
+            factoryDecorator.printMessageToFooter("Ungültiges Geburtsdatum", true);
         }
     }