Should You Ever Donk-Bet On The Flop?

What is Donk Betting?

A Donk-Bet is a somewhat unorthodox bet made by an out of position player who was not the aggressor in the previous street.

Donk-betting used to be one of the greatest sins a poker player could commit.

Back in the hay day of Limit Hold’em, as No-Limit was gaining popularity, most players c-bet flops at a very high frequency. Donk-betting (aka donking or donk-leading) on the flop meant surrendering the opportunity to effectively act last on the flop.

Nowadays, high level No-Limit players have added flop donk-bets to their strategy. But they don’t do this on a whim – they know exactly when, why and how to build effective donking ranges to maximize their EV.

Here you will learn:

• Why it is usually not a good idea to donk-lead the flop
• When it might be acceptable to donk the flop
• How to build an effective donking range to maximize your win-rate

Let’s dive right in.

4 Reasons Not to Donk-Bet

1. We Lose an Opportunity to Gather Information

The out-of-position player is at an informational disadvantage for the entire hand, as they have to act first on each street. When we donk-bet, we effectively split our range – betting some hands and checking other hands — which gives the in-position player extra information about our hand. This further increases our informational disadvantage.

To make matters worse, we have a capped range when we call a pre-flop raise from the big blind. This is because we usually 3-bet our strongest hands pre-flop (like AA/KK/QQ/AK/etc). On the other hand, the pre-flop raiser (PFR) will not be capped as they have all of the strong hands in their range.

Additionally, the big blind will often have many relatively weak hands that called the pre-flop raise due to pot odds. These factors mean that, on most flop textures, the PFR can c-bet at a relatively high frequency with a polarized range.

If we check and the PFR bets (or even checks), they are giving us information about their hand. This information is, in essence, the polarity of their range – they are either value betting with a strong hand or bluffing with a weak hand. Donk-leading into the PFR is the only way to miss out on this information.

2. Donk-Betting Can Leave Us (And Our Capped Range) Vulnerable to Overbets

If we donk-bet with a bunch of our strong hands, we risk leaving our checking range vulnerable to overbets. To understand this, let’s look at the following hand from the point of view of the PFR:

100NL. 100BB Effective Stacks

Folds to Hero (HJ) who raises 2.25BB. 3 folds. BB calls

Flop (5BB) Q♦ 8♥ 5♠
BB checks, Hero?

If we assume the big blind does not have a donk-bet range, a reasonable strategy would be to bet all three streets on blank run outs for 75% of the pot with the following value range (35 combinations):

• QQ+,88,55,AQs,Q8s,AQo

Given our bet size, we decide to employ a bluff-to-value ratio on the flop of roughly 2.5:1 in order to stay balanced. (If you aren’t sure how I arrived at that ratio, check out my hand analysis article here.) We choose the following bluffs (87 combinations):

• A5s,KJs-K9s,K7s-K6s,JTs,97s,75s+,64s+,54s,Jd9d,Jh9h,Js9s,Td9d,Th9h,Ts9s,KJo-KTo,JhTd,JhTs,JhTc,JsTd,JsTh,JsTc,JcTd,JcTh,JcTs

That is 122 total combinations of c-bet hands out of our initial range of 307 combos, which comes out to a c-bet frequency of 39.74%.

Now, let’s consider the same spot against a big blind who does have a flop donk-leading range.

Let’s say that we have a decent sample of hands on the player in the big blind, and we think she will usually donk-bet KQ+ for value (alongside some bluffs). This means that the strongest hand the big blind will check to us is QJ.

We can counter the big blind’s strategy by betting more often when she checks to us, and we can also do this in a balanced way so she will not be able to exploit us by under- or over- folding.

Let’s build our range vs this opponent using the same plan of betting three streets for 75% of the pot. Since we know that the big blind is capped at QJ, we can confidently bet with QJ+ for value (59 combinations):

• QQ+,88,55,AQs,KQs,QJs,Q8s,AQo,KQo,QJo

With a roughly 2.5:1 flop bluff-to-value ratio, we will choose the following 146 combinations of bluffs:

• 44-22,A9s,A7s-A2s,KJs-K9s,K7s-K6s,J9s+,T9s,97s,75s+,64s+,54s,ATo,KJo-KTo,JTo

That’s 205 combos of hands we c-bet from our initial range of 307 combos, which comes out to a c-bet frequency of 66.78%.

Despite identical bet sizing, we are able to c-bet much more often against a player with a donk-bet range, thus winning the pot much more often.

An astute reader will notice that since Villain is capped, we don’t have to worry about facing check-raises when we bet the flop, which allows us to use overbets to extract maximum value out of Villain’s relatively weak range.

Let’s re-evaluate our betting plan with overbetting in mind. If we instead choose to make three bets of 121% on each street, all of the money will go in by the river. Additionally, our bluffs will have a lot of equity against Villain’s range, so we can really go on the offensive with a 3.5:1 bluff-to-value ratio. We’re going to have to bluff with a lot of hands to hit that ratio, including:

• 66,44-22,AKs,AJs-A9s,A7s-A2s,KJs-K9s,K7s-K6s,J9s+,T9s,97s,86s+,75s+,64s+,54s,Ad8d,Ah8h,As8s,Kd8d,Kh8h,Ks8s,Jd8d,Jh8h,Js8s,Td8d,Th8h,Ts8s,9d8d,9h8h,9s8s,AKo,AJo-ATo,KJo-KTo,JTo

This gives us 204 combos of flop bluffs for a total c-bet frequency of 85.67%.

With a few small tweaks to our attack plan, we were able to increase our c-bet frequency from 39.74% to 85.67%. This means that we are able to win the pot more than twice as often when Villain caps his checking range.

When attacking a capped range, we can increase our EV by making the following changes to our betting strategy:

• Increase the size of our three-street value range
• Use a larger bet size, and consider overbets if necessary
• Increase our bluff-to-value ratio when we use the larger bet size

3. Check-Raising is Sexier Than Donk-Betting

Check-raising has some advantages over donk-betting:

1. If the in-position player bets, you get the opportunity to effectively act last on the flop 
2. You win extra chips when Villain bets with a bluff on the flop
3. You deny the equity of Villain’s hands that fold to your raise
4. You prevent Villain from profitably attacking your checking range with overbets

The main disadvantage to check-raising is that you cannot check-raise if Villain checks back the flop.

We’ve seen that having some strong hands in our check-raise range is necessary in order to prevent Villain from using an aggressive overbet strategy. One of the problems with donking is that it reduces the number of very strong hands in our checking range, and so our check-raise strategy will suffer.

Donking is therefore difficult to properly balance with a check-raise strategy – you will often need to use a mixed approach with some of your strongest hands to ensure that you have them in both ranges (e.g. donking with bottom set 50% of the time and check-raising it 50% of the time).

Mixed approaches are difficult to implement in practice. Unless all of your ranges are properly balanced, you will lose more EV from donking than you will gain.

Learn more about check-raising with Ryan Fee’s article (see: How to Check-Raise Like a High Stakes Juggernaut).

4. We Can’t Exploit High C-Bet Frequencies

High c-bet frequencies were once vogue, and for good reason.

There used to be an abundance of weak players that would play fit-or-fold on the flop, often donking with their strong holdings. C-bets practically print money against players like these. Players “in the know” would have c-bet frequencies as high as 100%, stabbing blindly on any board texture. Players eventually caught on to this and started check-raising more aggressively, which caused most players’ c-bet frequencies to drop.

That said, many players still have high c-bet frequencies of 70%+, which means their c-bet range is weak. We can take advantage of this fact by check-raising wider. Against these players, having as many strong holdings in our check-raise range is ideal.

Since our check-raise strategy will be so successful against high c-bet frequencies, donk-betting has little merit.

When Might Donk-Betting be OK?

We’ve discussed some reasons why we shouldn’t donk in general, but let’s have a look at some factors that make it more acceptable to build a donking range.

When calling a pre-flop raise from the big blind, we will often have many hands that the PFR will not – hands like baby pairs, suited gappers, offsuit connectors. This means that on some flop textures we can have a “nut advantage” by having two-pairs, sets and straights where the PFR can’t.

The range of a PFR often contains many broadway and suited-ace hands. This means that on some board textures, the PFR will have whiffed the flop with a large proportion of his range. Donk-betting is the only way to prevent in-position player from checking back and realizing the equity of his overcards.

On low to middling dynamic flop textures — ones with many turn cards that could change the distribution of equity — it is more acceptable to donk in order to prevent Villain from taking a free card. Plus, it allows you to name your own price for your draws and vulnerable hands.

In multi-way pots, the need to defend your checking range is reduced because the remaining players will contribute to the defense of the pot against bluffs.

This means that when the pot goes multi-way, we don’t need to (and shouldn’t) be bluff-catching as often, and the hands that we will consider bluff-catching with should be much stronger than in a heads-up pot. We can donk-bet in order to deny the other players’ equity without fear of our weakened checking range being relentlessly attacked.

Remember, your donking range always needs to be properly balanced in a way that works well with your check-raise strategy.

Building a Balanced Donk-Betting Range

Building a donking range is similar to how you would build any other betting range. First, figure out what hands you want to bet for value, and then balance them with an appropriate amount of bluffs.

However, we also need to remember to retain strong hands for our check-raise and check-call ranges in order to prevent Villain from overbetting aggressively.

For example:

100NL. 100BB Effective Stacks

LJ opens to 2.25BB, 4 folds, Hero (BB) calls

Flop (5BB) 8♦ 7♣ 5♣

Let’s say we called in the big blind with this range:

We have a total of 307 combos of hands on the 8♦–7♣-5♣ flop. When we analyze this board texture, the following factors allow us to consider building a donk-betting range:

• We have a nut advantage (we will have some straights and two-pair hands that the PFR won’t have as often)
• Many overcard hands in the PFR’s range have missed
• There are many possible turn cards that alter the board texture

We need to choose a donk-betting size before building the range. Using a small size allows us to see a cheap turn card with our draws — effectively a blocker bet. A large bet size does not work as well as a small bet size when we donk-bet.

When betting bigger, our range needs to be more polarized in order to effectively deal with raises. So when we donk-bet for a large size, we can only bet either very strong made hands or comparatively weak draws. Using a small size allows us to bet a variety of different hand strengths (both made hands and draws) aiming to ‘name our own price’ to see the turn card.

There are other advantages to using a small bet size, and you can learn about them in Matt Janda’s article on the topic (see: This Is Why You Should Use More Small Bet Sizes).

For this example, we will use a 25% pot bet size.

When considering which hands to include in our donking range, we need to add hands that allow us to continue betting on many different turn cards (such as Ts9s).

These draws need to be balanced with some very strong hands to prevent Villain from raising us aggressively when we donk-bet. However, since the equity of our draws is relatively high, they can make up a large proportion of our flop donking range.

Since the equity of hands runs so close on this board, a clear distinction between ‘bluffs’ and ‘value’ can’t be made as easily.

Here, we choose to donk-bet 44 of our 307 combinations for a donking frequency of 14.33%. Out of these 44 combinations, our value-type holdings include the following 11 combinations:

• 9d9c,8c8h,8c8s,8h8s,7h7s,5h5s,Ac8c,Kc8c,9c8c,8h7h,8s7s,9c6c,8s6s,8h5h

And our bluffs/draws include 33 combinations:

• 6d6c,4d4c,4h4c,4s4c,3d3c,2d2c,JdTd,Kd9d,Qc9c,Jc9c,Th9h,Ts9s,Td7d,9d7d,Kc6c,Qc6c,Jc6c,7d6d,Ad5d,9d5d,AdTc,AhTc,AsTc,KcQd,KcQh,KcQs,KcTd,KcTh,KcTs,JdTh,JdTs,JhTd,JsTd

Notice that this range connects with a wide variety of turn cards, and has some very strong hands like sets and straights that can 3-bet the flop if Villain raises. Note this range also isn’t too wide – we don’t donk very often and choose to retain many strong hands in our checking range.

When building a donking range, make sure that you:

• Include many different draws that will improve on a variety of different turn cards
• Use a smaller bet size to see a cheap turn card
• Include very strong hands that can be used to 3-bet the flop
• Don’t build a range so wide that it causes a dent in your checking range
• Consider how it impacts your check-raise strategy

(Almost) Never Donk-Bet

There are some situations where employing a small donk-betting range will increase your overall EV…

…BUT building a balanced donk-betting range is difficult in practice. If all of your ranges are not properly balanced, what you win from having a good donk-betting strategy will be accompanied by an even greater loss for your check-call and check-raise strategy.

Before building a donk-betting range, look at your check-raise and check-call ranges first. Ask yourself whether donking is necessary on that flop texture, and if it will leave your checking range too weak. Use a smaller bet size for your donk-lead, and make sure your range contains a variety of draws to cover many different turn cards.

Having a flop donking strategy is not necessary to becoming a strong player. But if you have already mastered check-calling and check-raising, then incorporating a good donking strategy into your game will help you squeeze out some extra EV in an area where most players overlook.

 Read more from Thomas Pinnock and Upswing:

• Learn how to analyze your hands away from the table — the right way — with Thomas’ How the Top Pros Analyze Hands in 2017
• Don’t let straddled pots get you down with The Professional Approach to Straddled & 3-Blind Pots
• Go back to the top of this donk-bet article