As I mentioned in the I HATE AK hand, MP1 busted out the hand after the AK hand. I pick up 2 hands later.

Now down to six-handed, I want to open up a bit. I've been playing VERY tight so far, mostly because of the cards and my chip stack.
PokerStars No-Limit Hold'em Tourney, Big Blind is t200 (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero (t2620)
CO (t4335)
Button (t3915)
SB (t3385)
BB (t10105)
UTG (t2640)

Preflop: Hero is MP with A, 7.
1 fold, Hero raises to t525, 2 folds, SB calls t425, 1 fold.

Flop: (t1250) A, 2, 3 (2 players)
SB checks, Hero ?