[zaephyr]

UTG is going to bet anything on this flop, cuz hes preflopraiser, UTG1 would bet any pocketpair higher then 3 any 2 overcards maybe even backdor flush/streight draws. So i think your flop play was good.

Turn i think i would bet here too, and i would fold to check/raise.

River i dont like this play (even tho i would probably play the same :P), given your read UTG1 is very tricky/aggro on the river, even tho he might paired here or even completed hes backdoor streight I think raise here is the right play. Why?
Given our read, with what would UTG raise preflop and cap this flop and then suddenly check on turn. I dont think he would cap with sth like AK, AQ on this flop (except maybe suited diamonds), if he would cap with JJ+, he would bet turn too, so i would put him on TT, so with flop raise he would most likely fold a better hand. So with UTG out u have much higher chance to win this pot.