SB was a bit of a LAGtard (48/12 with 2+ aggression)

PokerStars No-Limit Hold'em Tourney, Big Blind is t200 (4 handed) from (Format: Bet The Pot)

SB (t3386)
Hero (t2885)
UTG (t5539)
Button (t1690)

Preflop: Hero is BB with , .
2 folds, SB completes, Hero checks.

Flop: (t375) , , (2 players)
SB bets t200, Hero calls t200.

Turn: (t775) (2 players)
SB bets t400, Hero calls t400.

River: (t1575) (2 players)
SB bets t800, Hero calls t800.

Final Pot: t3175

I wanted to keep the pot small and we're on the bubble, so I didn't raise anywhere. And here I had a blind battle against a LAGtard - I'll let him do all the betting. He's likely drawing to less than 5 outs, so I'm not worried about more cards coming.

Look at the situation again... SB is a LAGtard who only open-completed. He could do this with a BIG variety of hands. On the flop, if he doesn't have an Ace, he'll fold to a raise. But he'll bet many hands we beat on at least one more street. There are no overcards that can come, so like I said, it's extremely likely he's drawing to 5 or fewer outs. Why scare him off that draw? This is a pretty simple WA/WB situation to me. And on the bubble.