Party Poker No-Limit Hold'em, $ BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($139.32)
Button ($139.20)
Hero ($132.20)
BB ($176.18)
UTG ($63.50)
UTG+1 ($97.03)
MP1 ($82.90)
MP2 ($115.29)

Preflop: Hero is SB with 9, 9. Hero posts a blind of $0.50.
1 fold, UTG+1 calls $1, 1 fold, MP2 calls $1, 1 fold, Button calls $1, Hero (poster) raises to $4.5, 1 fold, UTG+1 calls $4, MP2 calls $4, Button calls $4.

Flop: ($21) 9, 2, 8 (4 players)
Hero bets $15, UTG+1 calls $15, MP2 folds, Button folds.

Turn: ($51) Q (2 players)
Hero bets $25, UTG+1 calls $25.

River: ($101) T (2 players)
Hero ???

---

UTG+1 is a 23/3/0 over 21 hands.

What's your move here?