Hmmm. I first read this and didnt think i coulld comment, but looking harder there is alot of things here.

Im ignoring the fact its a freeroll for 15 Points btw.

Preflop - Raising 1010 under the gun isnt always sensible. According to many pros, 1010 here is a limp/call hand. But meh, raise if you wish. However 5x BB is a huge raise for UTG. Its a huge raise for anywhere really.

If were playing as played, your usually out of position, hence the issue with the raise. But luckily we are vs a blind here, so its good in the end.

He flat calls your 5x bet. What ranges are we assigning here? Id assume noone is this tricky at 15 FPPs, so lets discount the big 3 pairs, as they shove over i guess. Leaving us AK and below, JJ and below, maybe KQ/KJs, and unlikely any other 2 broadway cards. Hell, 67 suited might call here.

So, we are doubting the villain has a set. 33 is possible, but usally on a broadway draw board, bottom set bets out. So lets partially discount 33. Now, does he have a king? Id assume AQ or QJ or something folds to a stregnth bet here, and i know we have missed, but this is a perfect time to continuation bet. He has checked before us, so i would fire out a bet for around 325 given the size of this pot. Its enough to commit people for a big proportion of their chips, and with this big a pot and only 1k back, we now have to play the hand. Ill assume this bet picks up the pot here vs anything that doesnt have a K, or AQ. So your getting rid of gutshots (like the AJ), JJ fold, AT folds, any lower pair folds. And its a decent sized pot to win now with what is effectively a bluff.

But, say we check as we think we hare behind. The turn is a good card for us, we think. We know he doesnt have KK or QQ for sure. So now the only hands beating us are AJ and J9.

The problem here is youve let yourself hitt he 5th nut hand (behind AJ, J9, KK and QQ). However its also given hand we have to admit are possible the chance to beat you. AJ and J9 here are very possible.

Villain on the turn has checked the absolute nuts, as he should, and youve bet as the board is now very draw-heavy. with the raise coming in we have to look at the straight cards as possibilities.

Id much rather call the turn bet than shove. Call this bet and fill up for a fullhouse on the river and your guaranteed to stack. If you shove here if he is bluffing he might fold, he might have raised AK or something.

Plus if the river comes a horrible card (as it does) you can get away from it.

However this is all kinda pointless as i believe the correct play is a lower raise preflop (175 i like) or a limp, then betting the flop assuming they havent hit.