Aces up river spot $22/20k

[joejoe1337]

Just moved to table, I think I opened the CO last orbit and the bb peeled and c/f'd ace high flop.

Poker Stars $20+$2 No Limit Hold'em Tournament - t125/t250 Blinds + t25 - 9 players
The Official 2+2 Hand Converter Powered By DeucesCracked.com

Hero (CO): t7915 M = 13.19
BTN: t4212 M = 7.02
SB: t1986 M = 3.31
BB: t7981 M = 13.30
UTG: t9205 M = 15.34
UTG+1: t13549 M = 22.58
UTG+2: t5088 M = 8.48
MP1: t5974 M = 9.96
MP2: t13041 M = 21.73

Pre Flop: (t600) Hero is CO with Th Ad
5 folds, Hero raises to t625, 2 folds, BB calls t375

Flop: (t1600) 9d 8s Jh (2 players)
BB checks, Hero bets t1025, BB calls t1025

Turn: (t3650) Tc (2 players)
BB checks, Hero checks

River: (t3650) As (2 players)
BB checks, Hero bets t1250, BB raises to t3500, Hero folds

Who just checks back river?
Who pays off river?
Who bets bigger and then folds to the c/r?

[Gerrard48LFC]

I check back the river

[bizkit]

Who just checks back river?

As a default vs a relative unknown I probably would check back here. The only thing I can gather from this guy is he seems to like to defend his blind as he's done it the last two orbits. Although if I thought he was a big calling station I would probably bet a similar amount here.

Who pays off river?

I don't think you can call.

Who bets bigger and then folds to the c/r

The bigger amount seems wrong to me. It's hard for an opponent to pay off this bet unless he has exactly A9 or JT. Most opponents probably fire some type of bet with these hands on the river.