AJo in the SB 4 handed

[UncleRemus]

I've been on a horrible run lately (-15% ROI over my last 50) and am beginning to question everything (something has to be contributing to this slump, so I've got to try and isolate and correct it.) Big stack hasn't been overly aggressive, but hasn't exactly been sitting on his chips either. Push or Fold here?

Party Poker No-Limit Hold'em Tourney, Big Blind is t300 (4 handed)

UTG (t1770)
Button (t3135)
Hero (t1970)
BB (t1125)

Preflop: Hero is SB with J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img].
UTG folds, <font color="CC3333">Button raises to t900</font>, Hero ...