Ace to Five Lowball Rules

Overview

Ace to Five (abbreviated as A-to-5) is a common ranking system used in lowball poker, primarily in single lowball games (such as 2-7 single lowball) or high-low split games. Under this system, the numerical order of cards differs from standard poker: Aces are treated as the lowest cards, followed by 2s, and so on, with Kings being the highest. Straights (e.g., A-2-3-4-5) and flushes (e.g., five cards of the same suit) are not considered special hands - they do not constitute low hands and actually weaken the hand. Therefore, the perfect low hand is A-2-3-4-5, with as many different suits as possible to avoid a flush (though a flush itself does not affect low hand ranking under A-to-5 rules, which explicitly exclude flushes as a low hand factor).

Hand Comparison

Under A-to-5 rules, when comparing the strength of two low hands, the comparison begins with the highest card, moving downward; the smaller the highest card, the stronger the hand. For example:

• A-2-3-4-5 is the best low hand (highest card is 5).
• A-2-3-4-6 is the next best (highest card is 6).
• If the highest cards are equal, compare the next highest, and so on.

Note: A straight (e.g., A-2-3-4-5) is not considered stronger than a non-straight A-2-3-4-6 under A-to-5 rules, because straights are not treated as special combinations. However, A-2-3-4-5 (commonly called the "wheel") just happens to be the numerically lowest possible hand, so it is the optimal low hand.

Differences from Deuce-to-Seven Lowball Rules

Another common lowball ranking system is Deuce to Seven (2-7), where Aces are high, and straights and flushes worsen the hand (i.e., a straight or flush makes the hand worse). In A-to-5, Aces are low, and straights and flushes do not affect low hand rankings. Therefore, A-to-5 rules are simpler and more straightforward, often used for beginners or certain specific game variants.

Applications

A-to-5 rules are commonly found in:

• Single lowball games (2-7 Triple Draw sometimes uses 2-7 rules for the lowball part, but A-to-5 is used in some variants).
• High-low split games, such as Omaha high-low, which typically uses A-to-5 rules to determine the low hand.
• Home games or special formats on online platforms.

Strategy Tips

Since Aces are lowest in A-to-5, players should prioritize holding small cards like A, 2, 3, etc., and avoid making pairs or high cards. Also, because straights and flushes are not penalized, combinations like A-2-3-4-5 are ideal. However, in actual gameplay, players need to consider the hands opponents may hold and adjust their strategy accordingly.