Hey folks,
I am looking for winning overcalling-ranges in the BB. Meaning, when we are sitting in the BB and we have an openraiser and a coldcaller before the action gets to us. I seriously have no big idea of how wide we can actually defend. So far, I was calling pretty much all suited facecards and some of the low suited gappers.
Looking forward for your input 
I think you can overcall quite wide. Calling all of the suited face cards, connectors and gappers sounds quite ok for me.
I usually play about that range also when the original raiser opens from late position (CO,BTN) but if the OR is UTG or MP I usually tighten up and call just X7s+ and some suited connectors.
There's a lot of factors in play to just come up with 1 range.
Like La55i says it matters WHERE the OR is sitting and thus what range he plays. It also matters where the CC is sitting, if he's in MP his range is also alot stronger than lets say BTN.
Then it also matters, Do you think the OR is a strong player? and is the CC a regular or a fish?
You can figure out yourself when you want to widen your range and when to tighten up i hope in those different scenarios.
Also if i say i sometimes overcall K2s, or even Q2s+ in certain situations. You don't need to go total haywire with your own ranges. If you're now comfortable with defending the suited facecards and suddenly start defending a way wider range without a plan it's going to backfire on you.
I'd recommend slowly expanding your defending range where you think it's possible and you would feel comfortable and are able to justify your own plays. Otherwise you're just going to click buttons. Plan the hand before you even call preflop, watch the OR tendencies, watch the CC's tendencies. Consider the possible (reverse) implied odds you can have etc.
Vs two players you can play aggressively on certain boards, but UTG-MP are so tight by default. And you can't call wide range profitable. Some players use wide range, because the pot odds, but imo this is a mistake. You can't realize this equity. Very often the people will try to attack your weak range. Will be very hard to catch a bluff in those spots. Suited connectors, A3-A5s, 66+, QTs+.
Vs three and more players you have a lot better odds, but you can't play aggro anymore. Very rare. You can add any Axs and AJo, KQo, if you don't like squeeze in this situation. Vs four players you can add some hands, like T9o, ATo, J8s, QJo.
Look at UTG-MP OR. If he is not so tight, you can add more hands. The size also is a factor. Vs the smaller sizes you can call a lot more , the pot odds are better and usually the ranges are weaker.
