September 15 in Cardinals History
- Dizzy Dean pitches the last of 154 career complete games in 1940 with a 7-4 win over the Cubs with 9IP/9H/3ER/0BB/1K.
- 1950- At Ebbets Field, Cardinal starter Cloyd Boyer hurts his arm while warming up and is replaced by Red Munger. The reliever goes the distance, beating the Dodgers, 6-2, getting credit for a complete game, but not for a game started.
- 1968 The Cardinals clinch their twelfth National League pennant when the team beats Houston at the Astrodome, 7-4. The contest, which features Curt Flood collecting five hits, marks the final home run by Roger Maris, who will finish his 12-year major league career with 275 round-trippers.
- 1969 Cardinal hurler Steve Carlton fans nineteen batters, including three in the final frame.
- 1971- The Minnesota Twins traded Stan Williams to the St. Louis Cardinals for Fred Rico and Dan Ford.
- The Cardinals released Barry Lyons in 1993.
- 1995 Ozzie Smith takes part in the 1,554th twin killing of his career to set a new big league record for double plays.
- 1998 Ending a six-game drought without a homer, Mark McGwire, pinch-hitting in the ninth inning, hits his 63rd homer.
- The Cardinals traded Michael Blazek to the Milwaukee Brewers for John Axford in 2013.
- Harry McCurdy 1899
- Jim Davis 1924
- Charley Smith 1924
- Daniel Hudson 1994
- Speed Walker 1923
- Sam Narron 1935
- Taylor Duncan 1977
- Andy Rincon 1980
- Audry Perez 2013