$160 live buy in, 355 entries end of the month tournament at casino Arizona.
10000 starting stacks. Blinds 50-100 and on the first hand I'm starting in the big blind.

One early limp, middle position raises to 400, late middle position calls it, and cutoff calls. I have AcQd in the big blind and call 300 more. Early limper folds.
There are 4 players to a flop of 3c7cQh
I check, preflop raisers bets 800, next player folds, and the cut off calls. I check raise to 2300 with top pair top kicker. The preflop raiser folds and the cut off calls my 2300.
The turn is the 2h. I bet 2500 leaving 4800 behind and the cutoff goes all in. I read him for strength, tanked for about 2 minutes and ultimately fold. The player was mid 40s, with glasses on and very quiet. The players generally know what their doing in these tournaments and they play a lot of No limit cash games there. I gave him credit for AA, KK, or a set of 7s or 3s. The one hand I thought I beat was KQ but would he shove with that on the turn? Maybe KcQc.

I assumed I was ahead even after he called the check raise on the turn since he could have had a weaker Q or a flush draw. Was I just too passive here and shouldn't have changed my mind when faced with the all in? How did I misplay it and what would you guys have done? I didn't care about going out in the first hand. I've been playing 10+ years and I want to get better

Squeezing pre here to 2.2, don't hate the flat though. Flop as played is a very easy just call, your xr gets called by all better hands, same hand and probably KQ is only worse hand that continues. I mean it just sucks when you have to fold brick turns after putting in so much money on a great runout for your hand. Stop xr for value when you have to fold to bricks one card later getting 4:1. Next time just call

why are we b/f 33% of our stack with TPTK?

dont x/r flop this deep, we have Ac, just smooth call flop and reasses turn.

Generally speaking clubs, K,J are bad cards every thing else is good, look to call down

ok, lets pretend i'm villian and how i see your actions... you flat the 300 raise pre.. unless you are trying to be cute, no way i see you having anything close to a solid made hand.. then when you go with the check raise after that flop, it totally polarizes your range to me, TPTK, KQ, QJ, maybe even Q-10, middle set, bottom set or total garbage air.. (although to be honest, i dont see you check-raising with total air on this board...)
my shove is not totally outrageous based upon what i believe is your range here... especially if i have some decent equity...

Raising flop seems a bit ambitious IMO. He's betting into 4 people, so it's pretty rare this is a total bluff, and we block nut flush draws(Which are a lot of his semi-bluffs).

Flatting pre is the way to go here in a multiway pot. Shortfuses analysis of your c/r is the way to think about this. Your trying to raise for value and the only way your going to get that is if you can get someone to call with worse which isn't going to happen with that flop. I suppose this is probably a fold on the turn because more than likely he's got a set here but he could also have a hand like KcQc or QcJc. There's probably a small part of his range he's bluffing also so I think a call might be correct or close to it.

Thanks guys, I appreciate the responses. Check calling down with a disguised TPTK seems a little weak to me and at the time the cutoff hadn't shown strength and called pre flop and on the flop and could have been on a flush draw. But I agree, a check call on the flop makes a lot more sense and then just see what develops. Though with the brick on the turn I would have put more money in on the turn unless it went check check and that would have given him a free look at the river. While TPTK seems strong on that board I should have looked to play a smaller pot.

I think calling preflop is fine some of the time but raising is correct a majority of the time. Probably somewhere around 2000 is good. On the flop, I think raising isn't your best option here. Even if you are trying to get value off the flush draws your raise is laying almost 4:1 so they can definitely call. Mostly though you are getting called by KQ, 77's,33's, and maybe some random KQ's. You blocking the A makes it even harder for them to have a good flush draw to call you with.

Then on the turn when the flush doesn't get there I think a value bet would have been fine if you flatted the flop and it checked you. As played, I think check/calling is fine. If they have KQo they are looking to get to the river cheaper and probably not calling off a good portion of their stack with top pair K kicker. If you check though, the KQ's might think you were trying to squeeze and do a small value bet, which you can definitely call.

I think when you bet the turn you are only getting called by better hands most of the time and when they raise they are beating you probably 90% of the time which you aren't getting odds for.

3!/f pre is intended to thin field, but quite likely you get calls from EP then a gravy train
tough to play any hand for one pair value in 5 way pot tho
CC line and try to get to showdown

i agree with most said...
pre, u gotta squeeze and its not even close as far as im concerned.

u were probably thinking about raising it pre, then u decided just to call. then good board came out and u decided to x raise ( clearly overplaying your hand ). as played, no ***** way i would fold, if u x/r flop for value, what changed ott ? would u GII otf vs btn ? yes. so what turn changed ? nothing.