New table so no reads but seemed an obv fold to me. It was either a terrible fish bluff which isn't unusual at these buy ins, or he has something like 89, pkt 5/6's.

Revolution Gaming Network - $5+$0.5|10/20 NL (10 max) - Holdem - 10 players
Hand converted by PokerTracker 4

UTG+1: 43.85 BB
Hero (UTG+2): 64.52 BB
MP: 59 BB
MP+1: 19.34 BB
MP+2: 27.86 BB
CO: 24.83 BB
BTN: 47.13 BB
SB: 75.23 BB
BB: 23.46 BB
UTG: 19.51 BB

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 225.00) Hero has  A K 

fold, UTG+1 calls 1 BB, [color=red]Hero raises to 3.17 BB[/color], fold, fold, fold, fold, fold, SB calls 2.67 BB, fold, UTG+1 calls 2.17 BB

Flop: (1575.00, 3 players)  T K 7 
SB checks, UTG+1 checks, [color=red]Hero bets 3.43 BB[/color], fold, UTG+1 calls 3.43 BB

Turn: (2605.00, 2 players)  5 
UTG+1 checks, [color=red]Hero bets 8.69 BB[/color], UTG+1 calls 8.69 BB

River: (5211.00, 2 players)  6 
[color=red]UTG+1 bets 18 BB[/color], fold

UTG+1 wins 34.74 BB