99 against unknown

Hi.

TT and JJ and AQ are probably standard. 99 is probably too loose to get it in without any info. You should probably establish some dynamic first. Though 99 is usually a 4bet/call at higher stakes, but I doubt NL100 players go crazy with no info.

So I would call the 3bet and hope to flop some sets or dodge some overcards.

Thanks.

In late positions at nl100, I think it's ok to 3b/5b these type of hands like 99 as std, but I wouldn't 4b/c 99 here 'cause there's a lot of players who 4b-bluff too much but won't 5b-bluff enough at these stakes.

IP I'd just call villain's 3b like mbml.

versus unknown it's a snap fold vs 3bet, 4-bet/shove is a huge overplay, calling OOP vs 3bet is not a good idea too, I think

99 is way too strong to fold in these positions, even if we are OOP. We are going to get abused hard if we just fold a hand as strong as 99 here. We can expect the average villain to have 10% 3b range at the very least

I guess it really depends on everyone's playstyle. 2me it doesn't rly mattee whether you 4b/c or r/f. If you believe it will suit you better to be perceived loose - 4b/c, if not r/f and react to his stats afterwards.
I don't like r/c because you don't know what to do postflop. An overcard hits more than 80% (i believe from what i remember i calculated) and you'll either fold 2 much (cause let's face it - he'll cbet 80%+ there and when not - he'll pot control) or just not win much on low flops - 1 cbet max and mb lose even more, etc.

That's how I would think about it.