Well, I actually didn't...

Cutoff is 14/22/1.5 and seems fairly decent although I haven't seen him before. My image is good. I haven't donkbet a single time at the table before this.

His river bet looks weak and I think the ace gives me reason enough to c/r a set since the flush draw missed. I put him on AsXs or aces up. I don't think he would ever put me on total air here.

Seat 3: BUTTON ($320.75 in chips)
Seat 4: SB ($2,550.60 in chips)
Seat 8: HERO [ 10S,QD ] ($2,170.35 in chips)
Seat 9: UTG ($3,690.95 in chips)
Seat 10: CUTOFF ($1,120.00 in chips)
ANTES/BLINDS
SB posts blind ($5), HERO posts blind ($10).

PRE-FLOP
UTG folds, CUTOFF bets $35, BUTTON folds, SB folds, HERO calls $25.

FLOP [board cards KH,8S,2S ] (pot $75)
HERO bets $55, CUTOFF calls $55.

TURN [board cards KH,8S,2S,6C ] (pot $185)
HERO bets $145, CUTOFF calls $145.

RIVER [board cards KH,8S,2S,6C,AC ] (pot $475)
HERO checks, CUTOFF bets $80, HERO bets $1,935.35 and is all-in...

$805 for villain to call...