Opp is playing 5/1 over about 800 hands

Spew or utterly standard?

No-Limit Hold'em, $0.50 BB (8 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

saw flop

CO ($50)
Hero (Button) ($50.50)
SB ($108.50)
BB ($51.75)
UTG ($49.95)
UTG+1 ($52.10)
MP1 ($52)
MP2 ($69.50)

Preflop: Hero is Button with K, K
UTG calls $0.50, 1 fold, MP1 calls $0.50, 2 folds, Hero bets $3, 1 fold, BB calls $2.50, UTG calls $2.50, 1 fold

Flop: ($9.75) Q, 8, 7 (3 players)
BB checks, UTG checks, Hero bets $6, 1 fold, UTG calls $6

Turn: ($21.75) 7 (2 players)
UTG checks, Hero bets $13, UTG calls $13

River: ($47.75) J (2 players)
UTG checks, Hero bets $28.50 (All-In)