I'd like to know if it was a good bet on the river, or I should've just checked.
BTN is a tight player, usually passive pre-flop, but agressive post-flop.
Manual Hand Convertion, don't get scared with unusual things.
No Limit Hold'em
Blinds: $0.10/$0.25
Stacks
Hero: $18.35
BTN: $31.00
Pre-flop: (9 players) Hero is BB with 2 
5
A few players call, and we see a 5-handed flop.
Flop: 9 A Q ($1.25, 5 players)
SB checks, Hero bets $1.00, UTG calls, UTG+2 folds, BTN calls, SB folds.
Turn: A :spade:($4.25, 3 players)
Hero bets $3.40, UTG+2 calls, BTN calls.
River: K :spade:($14.45, 3 players)
Hero bets $13.70 and is all-in, UTG+2 folds, BTN calls.
