At a glance
- On the HUD
- RCE
- Formula
showdowns won / showdowns where their last river action was calling a bet- Typical range
35–55%
- Where it shows
- Badge, river: players facing a bet.
- Read hint
- Below: Loses when calling rivers: value-bet them more.
- Trust it after
- 12 chances. Below that the number is faded; reads need 12 chances and a number at least one standard error outside the typical range.
What it measures
Almost every river call ends in a showdown, and RCE asks whether the caller won it. That makes it the cleanest test of a player’s bluff-catching: did their calls find bluffs, or did they pay off value?
The spot: the river is dealt, someone bets, and this player calls. Their last river action is the call, the hand goes to showdown, and RCE records whether they won money. A player who bets and then calls a raise lands here too, because their last river action is still a call.
It isn’t the same as won at showdown, which counts every showdown: hands they bet and got called with, rivers checked down, all-ins on earlier streets. RCE keeps only the showdowns they paid to see on the river, where they’re usually holding a bluff-catcher, which is why its typical range sits lower than W$SD’s. And it isn’t how often they call. That’s the river side of fold vs bet. A player can call rarely and still lose most of those calls.
How it’s calculated
RCE = showdowns won ÷ showdowns where their last river action was calling a bet.
- A chance: a hand that reached showdown, where the river was dealt and their last action on it was a call of a bet. A check-call counts, and so does calling a raise after betting.
- It counts: when they won money. A chop or a side pot counts as a win.
- Not a chance: rivers they checked down, rivers where they made the last bet or raise, all-ins before the river (no river action at all), and calls followed by a fold to a later raise in a multiway pot.
The HUD keeps one version of RCE, with no splits by position or pot type.
Example: Finn’s last river action was a call in 25 showdowns, and he won money in 7: 7 ÷ 25 = 28%. That’s under the typical range, so it shows blue. It doesn’t make a read yet: the standard error at 28% over 25 chances is √(0.28 × 0.72 ÷ 25) ≈ 9 points, and Finn is 7 points under 35%. At the same 28% over about 42 chances, the error drops under 7 points and the read appears: “Loses when calling rivers: value-bet them more.”
Why it matters
A river call either wins the pot or loses the call, so RCE compares directly with pot odds. Here’s what a caller needs to win to break even:
| River bet | Caller needs to win |
|---|---|
| 50% of the pot | 25% |
| 66% of the pot | 28.4% |
| 100% of the pot | 33.3% |
| 200% of the pot | 40% |
The typical range starts at 35%, above even the pot-size price, because callers don’t only hold bluff-catchers: some river calls come with hands strong enough to beat thin value bets too. A player at 28% who mostly faces pot-size bets is losing money on their calls; the same 28% against half-pot bets is slightly profitable.
This is where the big money moves. River bets are the largest of the hand, so a player who loses river calls too often hands over the biggest pots. Remember that RCE measures the bettors too: at a table where nobody bluffs the river, everyone’s RCE drops. Read it with their river fold vs bet: calling a lot and winning little means value-bet more; calling rarely and winning most means they fold too much.
Too low, about right, too high
Too low: under 35%
What it says
Their river calls lose too often. Usually they call with hands that only beat a bluff, against bettors who aren’t bluffing enough. This is the classic calling station, and it often comes with a high WTSD and a low W$SD. It can also be a player stuck at a table of honest bettors, since RCE depends on who they’re calling, so check whether the whole table reads low.
How to exploit it
The HUD’s read: value-bet them more.
- Value-bet the river thinner: top pair with a weak kicker, second pair on a quiet runout. Their calling range holds worse.
- Value-bet bigger with strong hands. If they call 75% pot as often as 33%, the larger bet wins far more.
- Don’t bluff the river. They call, and the low RCE shows they call with plenty.
- Use the panel’s fold rates under each size button: pick the biggest size where their fold rate stays low.
About right: 35–55%
What it says
Their river calls roughly pay for themselves: at normal sizes they win more often than the price requires. They mix bluff-catchers with stronger hands, find some bluffs, pay off some value and don’t call every bet. Nothing here marks a leak by itself, but small samples hide a lot: at 30 chances the error around 50% is ±9 points, so a 45% reading could belong to a player who really wins 36% of their calls.
How to exploit it
Look at sizes instead. Many players call the same range whatever the bet, which shows up as similar numbers across fold vs small bets and fold vs large bets. If that’s them, use large river bets for value and small ones for bluffs. And check what they call with: a normal RCE alongside a high WTSD still means a lot of calls, so value-bet more often, not just bigger.
Too high: over 55%
What it says
They win most of their river calls. Either they only call with strong hands (look for a high river fold vs bet) or the players betting into them bluff too much. The first is an overfolder who happens to be right when they call; the second is a good bluff-catcher. The HUD colors it gold but makes no read for it.
How to exploit it
- If they fold a lot on the river too: bluff them. They give up everything but strong hands, so a half-pot bluff needs only 33.3% folds.
- Stop thin river value. When they call, they usually beat top pair with a weak kicker.
- If their river fold rate is normal: they catch bluffs well. Cut your river bluffs and value-bet only hands that beat a real calling range.
When it’s your own number
A low RCE on your own badge tells observant opponents to value-bet the river against you more. That’s the only side that makes a read.
To check yours, compare it with the price you usually get. If most of your river calls face half-pot to pot-size bets, you need 25–33.3% to break even; well below that, you’re calling too much. Fold more one-pair hands against players whose river bluff (shown) is low, and call more against those whose number is high. A very high RCE is the opposite warning: you’re probably folding hands that would win.
Using it on the HUD
RCE shows on the river, on the badges of players facing a bet, next to their WTSD and their fold rate against that bet size: the numbers that say whether this player is about to pay off. Colors: gold over 55%, blue under 35%, faded with fewer than 12 chances. The read appears with 12 chances and a full standard error under 35%. There are no narrower versions.
Sample size is the hard part. A chance needs a river call that reaches showdown, a small slice of all hands. Say a player gives about 3 chances per 100 hands (a guess; it depends on how often they see flops and call rivers): 12 chances take about 400 hands and 30 take about 1,000. At 50%, 30 chances still leave ±9 points. Lean on WTSD and W$SD until RCE fills in.
Questions
What does river call wins mean in poker?
River call wins is the share of a player’s river calls that win at showdown. It only counts showdowns where their last river action was calling a bet, so it measures how good their bluff-catching is: whether their calls find bluffs or pay off value bets.
What is a good river call win percentage?
Anything in the HUD’s typical range of 35–55% means a player’s river calls roughly pay for themselves. The break-even depends on the bet size: 25% against a half-pot bet, 33.3% against a pot-size bet, 40% against twice the pot. Below 35% against normal sizes usually means they call too much.
Is a high river call wins percentage good?
For the calls themselves, yes: they win most of them. But it can mean they call too rarely and fold hands that would win. Check their river fold vs bet: a high RCE with a high fold rate is an overfolder you can bluff, while a high RCE with a normal fold rate is a good bluff-catcher.
River call wins vs W$SD: what’s the difference?
W$SD counts every showdown a player reaches, including hands where they bet and got called. River call wins keeps only the showdowns where they called a river bet, so it isolates their bluff-catching. Its typical range sits lower, because a caller usually holds a weaker hand than a bettor.