diff --git a/src/break_out/model/Ball.java b/src/break_out/model/Ball.java
index 0d97474..af1cbf8 100644
--- a/src/break_out/model/Ball.java
+++ b/src/break_out/model/Ball.java
@@ -26,7 +26,11 @@ public class Ball implements IBall{
 	 */
 	public Ball() {
 		this.position = new Position(0, 0);
-		this.direction = new Vector2D(0,0);
+		this.direction = new Vector2D(Constants.BALL_SPEED,Constants.BALL_SPEED);
+
+		// start at bottom-center
+        this.position.setX(Constants.SCREEN_WIDTH/2);
+        this.position.setY(Constants.SCREEN_HEIGHT-3*Constants.BALL_DIAMETER);
 	}
 	
 	/**
@@ -49,14 +53,29 @@ public class Ball implements IBall{
 	 * 
 	 */
 	public void updatePosition() {
-		
+	    // @rxbn, Ruben Meyer
+        this.position.setX(this.position.getX()+this.direction.getDx());
+        this.position.setY(this.position.getY()+this.direction.getDy());
 	}
 	
 	/**
 	 * 
 	 */
 	public void reactOnBorder() {
-		
+
+	    // @rxbn, Ruben Meyer
+
+        // left border
+        if(this.position.getX() < 0) this.direction.setDx(-(this.direction.getDx()));
+
+	    // right border
+		if(this.position.getX()+Constants.BALL_DIAMETER > Constants.SCREEN_WIDTH) this.direction.setDx(-(this.direction.getDx()));
+
+        // top border
+        if(this.position.getY() < 0) this.direction.setDy(-(this.direction.getDy()));
+
+        // bottom border
+        if(this.position.getY()+2*Constants.BALL_DIAMETER > Constants.SCREEN_HEIGHT) this.direction.setDy(-(this.direction.getDy()));
 	}
 	
 }
diff --git a/src/break_out/model/Level.java b/src/break_out/model/Level.java
index 6c2f177..a8653f5 100644
--- a/src/break_out/model/Level.java
+++ b/src/break_out/model/Level.java
@@ -92,10 +92,10 @@ public class Level extends Thread {
 	        if (ballWasStarted) {
 	                
 	        	// Call here the balls method for updating his position on the playground
-	        	
+	        	this.ball.updatePosition();
 	            		            	
 	        	// Call here the balls method for reacting on the borders of the playground
-		         
+                this.ball.reactOnBorder();
 	        	
 	                               
 	            // Tells the observer to repaint the components on the playground