A universal football truth: you can’t turn a scoring opportunity of your own into a defensive touchdown for your opponent and expect to win a game.
Arizona, of course, is where Cal goes to find maximum punishment for every mistake. Brandon McIlwain has Kanawai Noa quite open 10 yards downfield. Throw the ball 2 feet lower and Cal has a first down in easy field goal range.
Instead the ball is two feet too high, Noa tips the ball, and the tip falls right into the hands of an Arizona player. That exact type of pass is picked off, what, 15% of the time?