[CaptainMorgan]

Code:

      
        switch(menuChoice)
        {
            /*case 1:     showPlayerScores(tempArray);  <-- uncomment this
                        break;*/
            case 2:    showAllScores(tempArray);
                        break;
            default:    System.out.println("Not A valid choice.");
                        break;
        
        }
        
    }

    public static void showAllScores(int[][] tempArray)
    {
        for(int p=0; p < tempArray.length; p++)
        {
            for(int r=0; r < tempArray[p].length; r++)
            {        
                System.out.println("Player "+(p+1)+" Round "+(r+1)+": "+tempArray[p][r]);
            }

        }    
    }
    
    public static void showPlayerScores(int[][] tempArray)
    {
        Scanner keyboard = new Scanner(System.in); 
        
        System.out.println("Show scores for which player?");
        
        int whichPlayer = keyboard.nextInt(); <-- your problem is from here on*
        
        for(int p=0; p < tempArray[p].length; p++)
        {
            for(int r=0; r < tempArray[p].length; r++)
            {        
                System.out.println("Player "+(p+1)+" Round "+(r+1)+": "+tempArray[p][r]);
            }

        }    
    }

showPlayerScores is really no different from showAllScores, minus a few lines. You ask for which player and even read it in from the keyboard, but you don't put it to use. In essence, you're making a call to two methods which perform basically the same function, with the array. If I haven't been clear, post back.