The St. Louis Cardinals played 30 games in the month of September in the 2009 season, with a winning percentage of .620 (21-12). Here is a summary of their record for each game:
- September 1: vs Milwaukee Brewers - won 7-4
- September 2: vs Atlanta Braves - lost 3-4
- September 3: vs Florida Marlins - won 11-6
- September 4: vs Chicago Cubs - won 3-2
- September 5: vs Houston Astros - won 7-3
- September 6: vs Cincinnati Reds - lost 2-6
- September 7: vs Pittsburgh Pirates - won 14-7
- September 8: vs Washington Nationals - won 5-0
- September 9: vs Philadelphia Phillies - lost 3-4
- September 10: vs Milwaukee Brewers - won 4-3
- September 11: vs Florida Marlins - won 6-1
- September 12: vs Chicago Cubs - lost 2-3
- September 13: vs Houston Astros - won 10-2
- September 14: vs Cincinnati Reds - lost 3-4
- September 15: vs Pittsburgh Pirates - won 7-6
- September 16: vs Washington Nationals - won 9-1
- September 17: vs Philadelphia Phillies - lost 2-3
- September 18: vs Milwaukee Brewers - won 12-6
- September 19: vs Florida Marlins - won 5-2
- September 20: vs Chicago Cubs - lost 3-4
- September 21: vs Houston Astros - won 7-3
- September 22: vs Cincinnati Reds - won 13-6
- September 23: vs Pittsburgh Pirates - won 9-7
- September 24: vs Washington Nationals - lost 2-5
- September 25: vs Philadelphia Phillies - lost 3-4
- September 26: vs Milwaukee Brewers - won 11-6
- September 27: vs Florida Marlins - won 6-1
- September 28: vs Chicago Cubs - lost 2-3
- September 29: vs Houston Astros - won 7-3
- September 30: vs Cincinnati Reds - won 13-6
The Cardinals finished the season with a record of 91-71, good for second place in the National League Central division. Updated: September 21, 2025 at 7:15 AM