How are Standings Calculated?

Order 

Teams are listed in order of win-percentage from highest-to-lowest.
When two teams have the same win-percentage, the team with the most wins is listed first.
In cases where teams have an equal number of wins and losses, the teams are listed alphabetically.

Win-Percentage

Win-percentage is games-won divided by total games-played.
For example, a team with 3 wins and 1 loss has played 4 games altogether, so its win-percentage is 3/4, represented as .750

Games Behind (GB)

To figure out GB, we start with the team which has the most wins compared to losses (highest: wins minus losses).  For example, if that team had 10 wins and 2 losses, our "magic number" when calculating GB is 8.  We figure GB each other team subtracting its wins minus losses from the leader's magic number, then dividing in half.  For example, if another team has won 8 games and lost 3, its wins-minus-losses is 5.  We subtract 5 from our magic number, 8, which gives us 3.  We then divide 3 in half to realize that this team is 1.5 games behind.

Sometimes the first-place team isn't the leader in games-behind.  This can occur when the GB leader has played more games than the first-place team.  This anomaly disappears once all teams have played the same number of games.