搬个2+2的牌谱来，

2/5 hardrock tampa

Villain is an aggressive TAG reg sitting with $2300.

Hero is sitting with $2400 and has no specific reads on villain except that he is raising a decent amount pre.

UTG ($500) straddles to $10
MP($700) limps, BTN($500) limps. Hero completes with 44 in SB. Villain raises to $55 in BB. straddler calls, MP calls, BTN folds, hero calls.

Flop ($230) K94sss
Hero checks. Villain bets $110. folds to hero who calls.

Turn ($450) 2h
Hero checks, Villain bets $275. Hero calls

River ($1000) 9c
Hero checks, Villain goes all in for $1860.

Hero?