No-Limit Hold'em, $0.50 BB (5 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com
saw flop
Gerv (MP) ($50)
Button ($55.10)

SB ($101.20)
BB ($33.55)
UTG ($12.65)
Preflop: Gerv is MP with Q♠, 9♠
1 fold, Gerv bets $1.75, Button calls $1.75, 2 folds
Flop: ($4.25) 9♦, Q♦, 7♠ (2 players)
Gerv bets $3, Button calls $3
Turn: ($10.25) 8♣ (2 players)
Gerv bets $8, Button calls $8
River: ($26.25) 2♦ (2 players)
Gerv bets $12.50, Button calls $12.50
I put him on a SD what bricks off (except JT but that's a small part of his range and I do think he wants to fastplay that on the Turn)
Now on the River the FD hits and I don't really like that so I want to bet/fold 50% as that was my plan.
How would you play the river?