I got knocked out of the main event with quads

[Daut44]

i have 40k at 400/800/100 ante. utg bigstack with 100k opens to 2500. im in the cutoff with 88, i call, big blind calls.

flop Jh 8h 8c

bb checks, utg bets 3500, i call, bb folds.

turn 7h

bb checks i check behind

river 3s

bb bets 5k, i make it 16k, he shoves, i hellmuth snap call, he flips up Th 9h, gg me.