Should the Yankees win Wednesday, they would also secure the best record in the AL and home-field advantage until the World Series.
"If you win, you win the division -- that's the bottom line," said manager Joe Girardi. "We have a chance to have the best record, and that's the bottom line. That's a good feeling that you can control that."
Wednesday's key games to watch (all times ET)
Rangers (Dempster, 12-8) at A's (Griffin, 7-1), 3:35 p.m. Preview >
Red Sox (Matsuzaka, 1-6) at Yankees (Kuroda, 15-11), 7:05 p.m. Preview >
Orioles (Chris Tillman, 9-2) at Rays (Hellickson, 9-11), 7:10 p.m. Preview >
If the postseason started today ...
This is how the teams would match up: Postseason Bracket »
To calculate a team's magic number, take the number of games it has remaining and add one. Then subtract the difference in the number of losses between that team and its closest pursuer.
A tiebreaker game will be played to determine a division winner, even if the tied clubs are assured of participating in the postseason. If a division championship tiebreaker is necessary, the head-to-head record between the clubs will determine home-field advantage. If the head-to-head record is tied, then the division record will be the next tiebreaker.
If two clubs are tied for the two Wild Card berths, home-field advantage will be determined by the head-to-head record between the clubs. If the head-to-head record is tied, then the division record will be the next tiebreaker.
Tiebreaker rules »
2012 postseason schedule
Wild Card playoff games: Oct. 5
Division Series: Oct. 6-12
AL Championship Series: Oct. 13-21
NL Championship Series: Oct. 14-22
World Series: Oct. 24-Nov. 1
Complete schedule »