SAN FRANCISCO -- The Giants' 6-3 win against the Rockies on Tuesday has them 2-0 to start their 10-game homestand, pushing them closer to clinching the division at home. The Dodgers, who were rained out of their game against the Nationals, now sit 8 1/2 games behind the Giants.
San Francisco still has two games left against Colorado, whom the Giants have taken nine of 11 games from this season.
The Giants now have won 24 of their last 35 games, stand at a season-high 22 games above .500 and need a combination of Giants wins and Dodgers losses to total seven before they clinch the National League West title.
Wednesday's key games to watch (all times PT)
Dodgers (Harang, 9-9) at Nationals (Zimmermann, 10-8), 1:05 p.m. (Game 1) Preview >
Dodgers (Beckett, 6-13) at Nationals (Lannan, 3-0), Game 2 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
Jay Lee is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.