How do I calculate equity to call? Plus, a quick question on VPIP/PFR stats on 888poker!

louuu19

louuu19

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  • #1
Hi everyone,
I am working hard to improve my poker game and have a few questions about math and stats.
First, how do I find the exact equity required to call a bet? If someone can show me the basic formula with a simple example, that would be great!
Second, once I know my opponent's VPIP and PFR, how do I use those numbers to guess their card range in that spot?
Lastly, I use the built-in HUD/stats on 888poker. Are the VPIP and PFR numbers shown for each player based only on the current table, or do they show their stats for the whole tournament?
Thanks for the help!
 
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  • #2
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  • #3
louuu19 said:
Second, once I know my opponent's VPIP and PFR, how do I use those numbers to guess their card range in that spot?

The bigger the Vpip, the wider their range. Look at what some of those percentages look like for opening ranges on equilab and it will give you an idea.

PFR is just telling you how much of that is a raise,so it allows you to estimate how wide and strong both the raising and limping ranges are.
 
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  • #4
louuu19 said:
First, how do I find the exact equity required to call a bet? If someone can show me the basic formula with a simple example, that would be great!
If someone bet 1.000 chips into a pot of 2.000 chips (half pot), the total pot will be 2.000 + 2 x 1.000 = 4.000, if you call, so you need to win it 1 out of 4 times to make a break even call, meaning you need 25% equity. Unless its on the river, you also need to factor in implied odds and reverse implied odds, which are the chips won or lost from future betting rounds.
louuu19 said:
Second, once I know my opponent's VPIP and PFR, how do I use those numbers to guess their card range in that spot?
In my opinion the main use of VPIP and PFR is to identify player types rather than to put people on exact ranges.

LAG / GTO type player
If someone have numbers like 22/18, then they have likely studied both preflop and postflop strategy, and against such players we focus on avoiding big mistakes and mostly do, what we are supposed to do to play a GTO strategy. We dont always fold bluff catchers to these players, since they do frequently bluff.

TAG
If someone have numbers like 18/14, then they are TAGs, and we play against them pretty much the same way, we play against LAGs/GTO players, except that we fold a bit more to their aggression, since they typically dont bluff as much, as they should.

Nit
If someone have numbers like 15/5 or 13/11, then they are nits, and we tend to stay out of their way, unless we have a strong hand or an implied odds type hand like a small pair calling to setmine. We dont go after thin value against these players, but we might look for good spots to bluff them. And most importantly we respect it a lot, if they start piling chips into the pot.

Fish
If someone have numbers like 48/5 or 32/9, then they are are recreational players AKA fish. We pound on these players by raising over their preflop limps, when we are in position, and by C-betting boards, that are good for our range. On the turn and river we bet more for thin value, since they typically call to much. On the other hand we dont do a lot of bluffing, especially not with hands like A high, that often have showdown value against their wide range.

We tend to respect it, when they raise us on the turn or river, since they can have more random two pair or gutshots or whatever. On the other hand if we checked flop or turn for pot control, we do frequently bluff catch against them on the river, because they arrive with many bad hands, that cant win at showdown.

Maniac
If someone have numbers like 42/34, then they are maniacs, unless the numbers are from a shorthanded table or a situation, where they were chipleader on the final table and played the "chip bully" role well. Against maniacs we widen our stack-off range preflop. A hand like AJo, that is often a clear fold, when a nit 3-bet, can become a 4-bet jam, if a maniac 3-bet us.

Postflop we let them bomb into us and dont make nitty folds. If they have it, they have it, and then we just play another tournament. We can still fold to their aggression, if we have nothing, but we should not fold for instance a top pair good kicker, unless the board is absolutely terrible like 4 cards to a flush or straight. We dont bluff maniacs, but we do sometimes bet or raise for value, since these players typically hate to give up.
louuu19 said:
Lastly, I use the built-in HUD/stats on 888poker. Are the VPIP and PFR numbers shown for each player based only on the current table, or do they show their stats for the whole tournament?
No idea since I dont currently play there.
 
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  • #5
Thank you so much for taking the time to write such a detailed breakdown!
The math for the equity formula makes total sense now with that example. Also, your explanation of how to use VPIP and PFR to identify player types—instead of just guessing exact cards—is incredibly helpful. Breaking down how to play against Nits, Fish, and Maniacs gives me a great game plan for my next session
 
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