ATs OOP

No Limit Hold'em Tournament - t25/t50 Blinds - 8 players - View hand 2137171
DeucesCracked Poker Videos Hand History Converter

BTN: t1010 20.20 BBs
Hero (SB): t1235 24.70 BBs
BB: t1339 26.78 BBs
UTG: t1285 25.70 BBs
UTG+1: t4266 85.32 BBs
MP1: t1460 29.20 BBs
MP2: t1366 27.32 BBs
CO: t1539 30.78 BBs

Pre Flop: (t75) Hero is SB with A T
5 folds, BTN raises to t100, Hero calls t75, 1 fold

Flop: (t250) 2 K A (2 players)
Hero checks, BTN bets t50, Hero raises to t200, BTN calls t150

Turn: (t650) 7 (2 players)
Hero checks, BTN checks

River: (t650) 9 (2 players)
Hero checks, BTN checks

The villain's 41/9 over 28 hands. Do you raise the flop w/ AT? What about A9?
I also would normally bet the turn, however I felt any reasonable bet-size would commit me.