BTN: $51.11 (102.2 bb)
SB: $64.47 (128.9 bb) Villain is unknown.
BB: $62.22 (124.4 bb)
UTG: $56.94 (113.9 bb)
Hero (MP): $55.74 (111.5 bb)
CO: $89.53 (179.1 bb)
Preflop: Hero is MP with A♥ 2♥
UTG folds, Hero raises to $1.50, 2 folds, SB calls $1.25, BB folds
Flop: ($3.50) K♦ J♥ 3♣ (2 players)
SB checks, Hero bets $2.25, SB calls $2.25
Turn: ($8) T♥ (2 players)
SB checks, Hero bets $4, SB calls $4
River: ($16) 3♦ (2 players)
SB checks, Hero ???
Spoiler
Hero checks
Results: $16 pot ($0.72 rake)
Final Board: K♦ J♥ 3♣ T♥ 3♦
SB showed T♦ Q♥ and won $15.28 ($7.53 net)
Hero mucked A♥ 2♥ and lost (-$7.75 net)