Winning percentage explained: ties and the .500 mark
How the wins plus half ties formula works, why draws count as half a win, and how to read a .XXX standing without the leading zero.
The formula behind the number
Winning percentage answers a simple question: what share of a team's games has it effectively won. The calculation is wins plus half of any ties, divided by the total games played. Dividing by games rather than by losses is what lets you compare a team that has played 20 games with one that has played 60, because both land on the same 0 to 1 scale. A team at 90-72 has played 162 games and won 90 of them, so 90 divided by 162 gives 0.5556.
Why a tie counts as half a win
A draw is neither a win nor a loss, so standings split the difference and score it as half a win. In the formula that half point is added to the wins in the numerator, while the tie still counts as a full game in the denominator. Take a 10-5-1 record: the numerator becomes 10 plus 0.5, the denominator is all 16 games, and 10.5 divided by 16 is 0.65625. That rounds to .656. Leagues that never draw, such as the NBA, simply leave ties at zero and the half-win term disappears.
Reading a .XXX standing
Sports pages print winning percentage to three decimals and drop the leading zero, so 0.556 shows up as .556 and a perfect record shows as 1.000. Reading it is easy once you know the anchors: .500 is a break-even record, anything above it means more wins than losses, and anything below means the reverse. A .765 mark, from a 13-4 season, signals a dominant year, while .400 points to a losing one. The three-decimal form exists so that even a one-game swing near the end of a long season can change the ordering of the standings.
Winning percentage versus games behind
Standings usually pair winning percentage with a games behind column, and the two answer different questions. Winning percentage ranks every team on the same scale regardless of schedule, which is why it decides seeding. Games behind measures the gap between one team and the leader in wins and losses, so it can read zero even when two teams have slightly different percentages. Use winning percentage when you want a single comparable rate, and treat games behind as a race-distance readout rather than a substitute for it.