How to play A2o preflop
Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb · 41 spots where A2o gets a decision
Opens (raise first in)
| Spot | A2o |
|---|---|
| SB open (RFI) First to act | Call 52.7% · Raise 2/2.5/3bb 47.3% |
Facing an open or a limp
| Spot | A2o |
|---|---|
| BB vs SB limp SB limps | Call 96% · Raise 2/2.5/3bb 4% |
| BB vs SB open 2bb SB opens 2bb | Call 99.7% · Raise 4/6bb 0.3% |
| BB vs SB open 2.5bb SB opens 2.5bb | Call 100% |
| BB vs SB open 3bb SB opens 3bb | Call 65.7% · Raise 6/9bb 34.3% |
Facing an isolation raise
| Spot | A2o |
|---|---|
| SB vs BB iso raise 2bb SB limps, BB isolates to 2bb | Call 95.2% · Raise 4/6bb 4.7% · Fold 0.1% |
| SB vs BB iso raise 2.5bb SB limps, BB isolates to 2.5bb | Call 95.8% · Raise 5/7.5bb 4.2% |
| SB vs BB iso raise 3bb SB limps, BB isolates to 3bb | Call 95.7% · Raise 6/9bb 4.3% |
Facing a 3-bet
| Spot | A2o |
|---|---|
| BB vs SB 3-bet 5bb SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb | Call 90% · Fold 6.4% · Raise 11.5bb 1.8% · All-in 79.84bb 1.8% |
| BB vs SB 3-bet 7.5bb SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb | Fold 99.8% · Raise 17.25bb 0.2% |
| BB vs SB 3-bet 6bb SB limps, BB isolates to 3bb, SB 3-bets to 6bb | Raise 13.8bb 38.7% · Call 32.1% · Fold 27.8% · All-in 79.84bb 1.4% |
| BB vs SB 3-bet 9bb SB limps, BB isolates to 3bb, SB 3-bets to 9bb | Fold 96.2% · Raise 20.7bb 3.8% |
| SB vs BB 3-bet 4bb SB opens 2bb, BB 3-bets to 4bb | Call 96.5% · Raise 9.2bb 3.4% · All-in 79.84bb 0.1% |
| SB vs BB 3-bet 6bb SB opens 2bb, BB 3-bets to 6bb | Fold 72.7% · Raise 13.8bb 25.9% · Call 1.4% |
| SB vs BB 3-bet 5bb SB opens 2.5bb, BB 3-bets to 5bb | Call 86.6% · Raise 11.5bb 13.3% |
| SB vs BB 3-bet 7.5bb SB opens 2.5bb, BB 3-bets to 7.5bb | Fold 90.5% · Raise 17.25bb 8.2% · All-in 79.84bb 1.3% |
| SB vs BB 3-bet 6bb SB opens 3bb, BB 3-bets to 6bb | Call 97.1% · All-in 79.84bb 2.7% · Raise 13.8bb 0.2% |
| SB vs BB 3-bet 9bb SB opens 3bb, BB 3-bets to 9bb | Fold 91.1% · Raise 20.7bb 8.9% |
Facing a 4-bet
| Spot | A2o |
|---|---|
| SB vs BB 4-bet 9.2bb SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB 4-bets to 9.2bb | Fold 69.4% · Call 26.5% · All-in 79.84bb 4.2% |
| SB vs BB all-in SB limps, BB isolates to 2bb, SB 3-bets to 4bb, BB goes all-in | Fold 99.9% · Call 0.1% |
| SB vs BB 4-bet 13.8bb SB limps, BB isolates to 2bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb | Fold 73.5% · Call 26.4% · All-in 79.84bb 0.1% |
| SB vs BB all-in SB limps, BB isolates to 2bb, SB 3-bets to 6bb, BB goes all-in | Fold 95.2% · Call 4.8% |
| SB vs BB 4-bet 11.5bb SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB 4-bets to 11.5bb | Fold 67% · Call 28% · All-in 79.84bb 5% |
| SB vs BB all-in SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb, BB goes all-in | Fold 100% |
| SB vs BB 4-bet 17.25bb SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB 4-bets to 17.25bb | Fold 62.5% · Call 23.8% · All-in 79.84bb 13.6% |
| SB vs BB all-in SB limps, BB isolates to 2.5bb, SB 3-bets to 7.5bb, BB goes all-in | Fold 99.9% · Call 0.1% |
| SB vs BB 4-bet 13.8bb SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb | Fold 65.2% · All-in 79.84bb 26.1% · Call 8.7% |
| SB vs BB all-in SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB goes all-in | Fold 100% |
| SB vs BB 4-bet 20.7bb SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb | Fold 99.7% · Call 0.3% |
| SB vs BB all-in SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB goes all-in | Fold 100% |
| BB vs SB 4-bet 13.8bb SB opens 2bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb | Fold 96.2% · All-in 79.84bb 3.8% |
| BB vs SB all-in SB opens 2bb, BB 3-bets to 6bb, SB goes all-in | Fold 93.8% · Call 6.2% |
| BB vs SB 4-bet 20.7bb SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb | Fold 100% |
| BB vs SB all-in SB opens 3bb, BB 3-bets to 9bb, SB goes all-in | Fold 100% |
Facing a 5-bet or shove
| Spot | A2o |
|---|---|
| BB vs SB all-in SB limps, BB isolates to 3bb, SB 3-bets to 6bb, BB 4-bets to 13.8bb, SB goes all-in | Fold 99% · Call 1% |
| BB vs SB all-in SB limps, BB isolates to 3bb, SB 3-bets to 9bb, BB 4-bets to 20.7bb, SB goes all-in | Fold 99.3% · Call 0.7% |
| SB vs BB all-in SB opens 2bb, BB 3-bets to 4bb, SB 4-bets to 9.2bb, BB goes all-in | Fold 99.9% · Call 0.1% |
| SB vs BB all-in SB opens 2bb, BB 3-bets to 6bb, SB 4-bets to 13.8bb, BB goes all-in | Fold 100% |
| SB vs BB all-in SB opens 2.5bb, BB 3-bets to 5bb, SB 4-bets to 11.5bb, BB goes all-in | Fold 100% |
| SB vs BB all-in SB opens 2.5bb, BB 3-bets to 7.5bb, SB 4-bets to 17.25bb, BB goes all-in | Fold 100% |
| SB vs BB all-in SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.7bb, BB goes all-in | Fold 100% |
Settings: Heads-up · 80bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 2bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 80bb stacks, 5% rake capped at 2bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 22.38). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.
Fits exactly: no game we have checked.
Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).
Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.