A whining individual who cannot accept an outcome that does not go their way. One who will not stop bitching until even those that were on their side wish that the Sooner would just shut up. Other synonyms include whiner, crybaby, embarassment to football.
The Sooners lost to Oregon and haven't stopped complaining since. Perhaps they should pay more attention to the salary their starting quarterback receives at a car dealership (severe cheating) and less attention to a couple of miscalls.