10NL nut flush critique please

[Margin Of Error]

PokerStars No-Limit Hold'em, $0.10 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP3 ($2.70)
Hero ($15.85)
Button ($6.10)
SB ($1.45)
BB ($9.70)
UTG ($9.60)
UTG+1 ($11.25)
MP1 ($8.05)
MP2 ($11.50)

Preflop: Hero is CO with A, T.
2 folds, MP1 raises to $0.3, 1 fold, MP3 calls $0.30, Hero calls $0.30, 3 folds.

Flop: ($1.05) 8, 4, 9 (3 players)
MP1 bets $0.7, MP3 folds, Hero calls $0.70.

Turn: ($2.45) 9 (2 players)
MP1 bets $1, Hero raises to $3, MP1 calls $2.

River: ($8.45) 5 (2 players)
MP1 checks, Hero bets $4, MP1 calls $4.

[takesix]

I don't especially understand the turn re-raise unless you thought he was weak and could fold it then and there.

[givememyleg]

The turn bet does look weak, but I probably just call again. I probably push river.

[zook]

I like the turn re-raise. His bet is weak and you're repping the 9. And you basically did push the river, it looks like you left him with 5 cents behind. NH.