Not sure about my line here. From the $12 early Catfish on 888. Literally the first hand of the tourney.

888 Poker - 15/30 Ante 3 NL - Holdem - 7 players
Hand converted by PokerTracker 4

MP: 166.67 BB (VPIP: 26.67, PFR: 20.00, 3Bet Preflop: 8.33, Hands: 30)
CO: 166.67 BB (VPIP: 11.11, PFR: 11.11, 3Bet Preflop: 0.00, Hands: 10)
BTN: 166.67 BB
SB: 166.67 BB
Hero (BB): 166.67 BB
UTG: 166.67 BB
UTG+1: 166.67 BB

7 players post ante of 0 BB, SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 2.2 BB) Hero has 9 J

UTG raises to 2.47 BB, fold, fold, fold, BTN calls 2.47 BB, fold, Hero calls 1.47 BB

Flop: (8.6 BB, 3 players) 4 9 8
Hero checks, UTG bets 3.83 BB, fold, Hero calls 3.83 BB

Turn: (16.27 BB, 2 players) 3
Hero checks, UTG checks

River: (16.27 BB, 2 players) A
Hero bets 8.13 BB

I was worried about the Ace hitting his range because he can easily have AK/AQ/AJ the way he played the hand, so I decided to try and rep the flush to get those hands to fold. If I check and he bets, I can't call.

He's never folding an ace here unless he's super nitty so your line make no sense unless you are doing it for value.

Wouldn't say his line makes no sense he called pre flop called the flop and bet river when the 3rd heart hit, if I knew nothing about the player and made it to the river with A high it wouldn't be an easy call, that early on in a tournament its unlikely someone would try a bluff line like that. I don't mind it, and think an even larger bet on the river would be more convincing, trying to extract max value with a strong hand.

Trivial call with an Ace, you still have too much air for a non-nit vill to zero in on a flush. You'd need to approximately pot it or more but trying to get top pair to fold is prob a losing play a small stakes.

Seems like you bet moreso to stop him bluffing you. Rarely see a worthwhile blocking bet but you could have bet smaller and achieved more (he's not value betting Ax for more than half pot so you gain nothing).

trivial check-call otr.

What worse hands are betting this river?

^^ busted clubs fd, busted oesd's bluff here OK.

Given his preflop raise from EP he will have very few busted club draws that don't connect with the Ace on the river. Like maybe KQcc/KJcc and that's it.

I think check / deciding is the best line here. As played, I think you should have a larger sizing on the river OR I think sometimes you can throw out a smaller blocker bet out there. I haven't really messed around with them at all, but the concept of them is fairly interesting.

Fold pre is even better my dude . You’re equity 3 ways is very poooeand you will end up in crappy spot 150+ bb deep against strong and non capped range

I am nit picking here but this will often lead you too difficult spot. HU it’s a trivial call but once MP called your equity falls drastically because he’s range is mainly composed of better Jx

Anyway as played x the river. You have showdown value and vilain is not going to be bet betting 100% of the time. You have some flushsed that could play this way

If any Ace wouldn't be in his range i would like your plan , but surely there is one...

With the size of your river bet he only has to be right 25% of the times he calls to be profitable so it's a pretty easy call for V

Don't turn middle spots for small spots into huge deals. Call, win a few, lose a few.