Haven't seen guy much but looks like a regular. Is playing 18/12 over 300 hands and this is the first time he has 3bet me. I'm 13/9 this session.

PokerStars No-Limit Hold'em, $4.00 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

CO ($98)
Button ($640.10)
SB ($366.30)
BB ($214)
UTG ($404.50)
UTG+1 ($80)
MP1 ($412)
Hero (MP2) ($560.30)
MP3 ($412.60)

Preflop: Hero is MP2 with K, A
3 folds, Hero raises to $16, MP3 raises to $52, 4 folds, Hero calls $36

Flop: ($110) A, 9, 2 (2 players)
Hero checks, MP3 checks

Turn: ($110) 10 (2 players)
Hero bets $72, MP3 calls $72

River: ($254) K (2 players)
Hero $289 behind