Referee

Sign Language: Referee, Umpire, Score —powered by eHow.com

Now we'll go over some other signs. Referee, obviously because they blow a whistle. Referee. Umpire is signed like this. Umpire. Score. Score. Points. Points. Inning. Inning. A match or a set. First quarter. Second quarter. Third quarter and fourth quarter. Let's review. Referee. Umpire. Inning. First quarter, second quarter, third quarter, and fourth quarter. Points. Score. Now practice those signs!

Source: http://www.ehow.com/video_4403453_sign-language-referee-umpire-score.html