ANAHEIM -- The Angels suffered a debilitating 6-2 loss to the Rangers on Wednesday night that caused them to remain 3 1/2 games back of the Athletics for the second American League Wild Card spot, and slip to four back of the Orioles for the first one.

What hurts the Angels most, as C.J. Wilson pointed out, is that they don't have any more games remaining against those two teams.

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Thirteen remain in total, with four of them against the Rangers, three against the White Sox and six against the Mariners.

They need to win a lot of games -- but they also need help.

Today's key games to watch (all times ET)

Rangers (Darvish, 15-9) at Angels (Greinke, 14-5), 10:05 p.m. Preview >

A's (Milone, 13-10) at Tigers (Sanchez, 8-12), 1:05 p.m. Preview >

If the postseason started today ...

This is how the teams would match up: Postseason Bracket »

Postseason 101

Magic numbers
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.

Tiebreaker scenarios
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