Situation A:

On the flop. first to act player A bets $10. Player B, without saying anything, puts out $16. Did he:

a). Raise and must add $4 and complete to $20

b). Call and must take back the $6

Had he slid up $14 or $15, would it be different? In other words, does half a bet+ constitute a raise in no limit?





Situation B:

On the flop, first to act player A bets $10. Player B goes all-in for $19. Yet to act player C wish to raise the minimum.

a). He must bet $20 since the last full bet is $10

b). He must bet $38 since the last bet was for $19

In my cardroom the 51% rule is enforced, though I've heard of places using 50% as well. Basically for situation A - 50% of a raise would be $15; as he put out more than this he is held to a minimum raise of $20. In my room if he had put out $15 he'd be held to a call (as we use 51%). Following this $14 is also a call as well.

For B, I believe the minimum raise is $29 total. 10 more than the 19.
The bet was initially $10, so the next raise has to be at least 10 more. This situation basically never happens anyway.

A is room dependent, but generally NL plays with the "50% rule" - if you put in 50% or more of a min raise, you are forced to complete to a full min raise (if you can). So (a) would be the ruling in the vast majority of rooms. If he put out $14, he would have to take back $4 and just call. If he put out $15, that is 50% of the min raise amount, so he must complete it to the min raise amount of $20.

B is as Motierre said. The raise to $19 is not a legal raise (it is termed "action only"). The correct min raise amount for C is still $10 more than the previous bet, which was $19, so the min raise is to $29. As an aside, if it went back to A for $19 total, he could not raise again, all he can do is call the extra $9 (or fold).

Most places I've played and dealt use the 50% rule, so if you put out between $15 and $19 you are forced to make it $20.

In my current room it's just a call, you take back the $6.

In situation B a minraise is $29. The initial $10 bet set the minimum betting unit for that round. I have had dealers I otherwise trust swear on their life that C can raise to $20 because they're hung up on the fact that the $9 was not a "legal raise" but I strongly disagree.

A) In most rooms ... In cash play ... this is a forced raise to $20. In most rooms ... In tournament play ... this is only a call. This is one area where Robert's and TDA differ, but some rooms apply TDA rules to their cash tables for 'consistency' among the Dealers.

B) In a much higher percentage of rooms the min raise is to $29 since the original bet was $10.

Where you will run into interesting rulings is whether or not Player A could've 3-bet the $19 if it got 'called' all the way around. Some Floors will (mistakenly) apply the 50% rule to the all-in 'BET' and allow Player A to essentially raise himself! GL

To add a twist, in a 1/2 game, isn't A's raise just $8, so B could make it $18?

OP was on the Flop .. but in your example B could make it $16 if Pre-Flop and then all players, including A can 3-bet. GL

This is not my experience. I play in lots of places, and mostly tournaments. And in pretty much all of them, in a tournament, putting out 16 when facing a bet of 10, the player will be required to correct that 16 into a min-raise to 20, and will not be allowed (or forced) to just call the 10.

Cheers, Greg Raymer (FossilMan)

Indeed. I have no idea where a20 got that from, and I'm pretty sure this misinformation has been corrected before too. Here is the TDA rule, which is in effect identical to the RRoP rule:

All of the responses are pretty much spot on. The only wrinkle I'll add is if I'm dealing at a 1-2 NL table and the SB throws out 2 white chips on top of his 1 white chip already in place in an un-raised pot. I'm not going to force the SB to complete the raise to $4 but will let him just take one of the white chips back and call $2.

Sorry .. I guess I got them flipped around in my hast to post ...

There are at least 2 casinos in Michigan that use the tournament 50% rule for cash play. GL