2/5NL deep. Hero ~950. All players except one severe short stack and one ~equal stack cover. Villain and 4-5 others $2000+

Villain (BB) is widely regarded as the best local reg. Numerous WSOP cashes including an extremely deep run in the 2011 Main Event and a final table in a $5000 event this year. Smart, tricky, and aggressive.

Hero (button) is well-respected semi-pro who is a significant winner at these stakes over the last 2 years. Considered tight by many of the looser regs (though arguably laggy by online standards). Villain may consider hero weak b/c he's owned me in the few hands we've played over the last year or so.

(to preempt any table change/seat change suggestions, it's a must-move and I'm holding the "first seat change" button)

Several limpers, Hero goes to $30 on button with AKo. SB fold, Villain to $120. All others fold to Hero. Raise, flat, or fold.

I'm doing 400/ stack off although many might want to go a little less on the sizing

What's his 3-betting range consist of in the BB (assuming he didn't limp raise)? And more importantly, does he think you're only continuing at the very top of your BTN raising range?

I think the answer to your question is very villain and history dependent, since you would know how he reacts to 4-bets, if you think you can outplay him IP post-flop, etc

Villain's 3-bet range includes virtually anything that could potentially make a playable hand. For example, I wouldn't expect him to show up w/ 83o here, but have seen 35o.

I don't really know if he'll include light 4-betting in my range. We have very few hands together as he plays higher when available and we generally play different hours. I would assume that he'd give me a narrow 4-bet range by default, but given the button/blind dynamic and his own extremely aggressive reputation, he could think I'm taking a stand and playing back (of course, I could be leveling myself by taking that into consideration).

Flatting is ok since you have position and I would expect him to often rep your hand when it his, but I prefer 4-bet/snap all-in.

Sizing on 4-bet?

And any love for flat, overshove any c-bet?

just realized that doesn't make any sense. mulling a couple different hands. lost track of stacks in my own post.

I'd 4bet this almost 100% of the time for obvious reasons, sizing-wise 275 seems about right although as small as 225 could still work. Much more interesting spot if you have something like TT or 99 imo.

4b/call IMO. I'm flatting 99/TT for the most part.

I think a small click is kinda bad here, I would rather flat than that unless it is part of your normal game and opponent knows you could do it light or with big hands. I am 4betting to 350-400 as I would much rather have some fold equity. The times you make money in this spot is not when you guys get it all in, it's when he hands you $120 without seeing a flop or when he finally spazzes when you actually have AA/KK.

3betting that big pretty much lets him play perfectly with his entire range preflop though, and I don't think it's even close (especially since he's a very good player and thus probably won't ever conveniently spazz preflop vs that sizing when we have the nuts like you seem to believe). I'd much rather get into some slightly tricky spots with a small click then make his decisions that crystalline for him.

4bet, this villain all day with his wide 3betting range. It's not like you got 3bet by some passive old nit.

I'm assuming you mean 4betting. Do you really think he will really play perfectly if he has 88-QQ, AJs, AQ? We are putting him in a tough spot for a big part of his range. His response to our 4bet won't be crystal clear.

4-betting large is not to induce a spazz, it's to get him to fold jj type hands which have us beat. This doesn't seem like the kind of spot you want to see a flop, any 4-bet is rather polarizing and he can see a flop with a much wider range and still play perfectly against you (which he really can't no matter what you do). I would still rather flat than click, as I am sure villian is either c-betting or c/c just about any flop and this way you can keep aq/kq hands from folding.

270 call