it is called a "hat trick" (answered)

[thedude]

so the fact Wagner also did it 4 times doesn't matter?

Meh... My source only listed Cobb, so i said "what player" not player "players". Since i asked for a singular answer, I credited the first singular answer. Someone had said Wagner earlier, i would have credited him with the correct answer. But since Cobb was the first correct answer, that is the one i marked right.