 Timekeeping is at the discretion of the referee who adds on stoppage time at the end of each half.There are various solutions for knockout games that end in a draw, such as a replay, or what the rules refer to as "Winner on the Day" measures such as extra time (20 minutes), further extra time (10 more minutes), or a shoot-out.The application and details of these measures vary according to the importance of the match and the difficulty of scheduling possible replays, and can change from year to year.