games behind
GB = ((W1 - W2) + (L2 - L1)) / 2
In
For example, if Cleveland is three games behind Cincinnati for first place, Cleveland would have to win three games, and Cincinnati would have to lose three, to tie for first. A "games behind" situation changes rapidly when two teams contesting the lead play each other since a zero sum game plays out. In this case, Cleveland would pull even with Cincinnati in a three-game sweep.
It is often used in professional baseball and basketball. Usually, in tables of standings in newspapers and magazines kept during the season, teams are ordered by the teams' winning percentages, with the number of games they are behind the division leader supplementing the table. On rare occasions, it is possible for a team on top of a division to be games behind a second place team. This usually occurs during the early portion of a season when teams have played an uneven number of games. For example, if Team A has a record of 23-13 and Team B has a record of 26-15, Team A would be recognized as having a better record by virtue of their .639 win percentage to Team B's .634 percentage. However, in the standings, Team A would still be one-half game behind Team B, though they would be ordered ahead of Team B.
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