$150 Tournament Live Casino
52 entrants
8k starting stacks.
Blinds 200/400 Level 5

Villain is in CO (8k). Sat down 10 minutes before (late reg) and is young (25?). Dealer asked if he had played before because he acted out of turn (they give you a 1 hand penalty after warning). Villain stated that "it had been a long time."

Hero has almost doubled his starting stack to 15k
Hero is UTG with AcKc
I open to 1400.
Folded to Villain and he raises to 3600......

This is almost half of his stack but a pretty standard sizing for a 3bet.

Hero???