The Cardinals continue to lead in the chase for that second Wild Card berth, 1 1 /2 game better than the Dodgers, who were rained out on Tuesday, and 2 1/2 games better than the Brewers.
"The No. 1 goal was to get back to .500 and go from there," said Yovani Gallardo, who earned the win on Tuesday after allowing only two hits in 6 2/3 scoreless innings. "Everybody in here is not going to give up until the last game of the year."
Added Ryan Braun: "We just continue to believe. The second Wild Card gives everybody hope."
Wednesday's key games to watch (all times ET)
Dodgers (Harang, 9-9) at Nationals (Zimmermann, 10-8), 4:05 p.m. (Game 1) Preview >
Dodgers (Beckett, 6-13) at Nationals (Lannan, 3-0), Game 2 Preview >
Brewers (Estrada, 3-6) at Pirates (McPherson, 0-0), 7:05 p.m. Preview >
Astros (Harrell, 10-9) at Cardinals (Lynn, 15-7), 8:15 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