This hand happened somewhat early in the tournament, blinds at 100/200 w/25 ante
This is a new table with mostly late reg players so everyone has about 20k (starting stack)

Hero: 3h3d Pos: CO

Action: UTG +1 raises to 600
MP calls
MP2 raises to 1500
HJ calls
CO(hero) calls
UTG+1 calls
MP calls

Flop: 3s2s9h

Checks around to CO(hero), bets 3200
UTG+1 calls all other players fold

Turn: 3s2s9h8c

UTG+1 checks
CO(hero) bets 5800
UTG+1 calls

River:3s2s9h8c7d

UTG+1 goes all in for 10,200
Hero: calls

UTG+1: 10sJc for straight

I thought the only possible made hand that beat me here would be 10sJs but that the villain often has missed flush draws here or possibly two pair hands that I had to call. I have no clue how/why he called my flop bet in a multi-way, 3-bet pot w/J high. Bad river call on my part?