The Redbirds came to Philadelphia and promptly took care of business in the first game of this doubleheader, chasing Bob Walk in the fifth inning, smacking him around for four runs on nine hits. The big blow of the game was off the bat of Leon Durham, who hit a grand slam off of Warren Brusstar (one of Walk's runners and two left by Dickie Noles), which put the game out of reach, even though the Phils would score four runs in the later innings. Lefty Mark Davis (1989 Cy Young winner as a closer for the San Diego Padres) made his major league debut for the Phillies. Coupled with a Montreal win, this game left the Phils 1½ games behind the Expos going into the second half of the doubleheader.
NL East standings as of September 12, 1980 (Game 1):

Cardinals 4 vs. Phillies 7 September 12, 1980 (Game 1)
Game Summary (courtesy of retrosheet.org): CARDINALS 1ST: Oberkfell singled to center; Scott grounded out (third to first) [Oberkfell to second]; Hernandez struck out; Simmons singled to right [Oberkfell scored, Simmons to second (on throw to home)]; Hendrick singled to right [Simmons scored]; Durham popped to third; 2 R, 3 H, 0 E, 1 LOB. Cardinals 2, Phillies 0. PHILLIES 1ST: Rose grounded out (second to first); McBride singled to right; Schmidt lined to shortstop; Luzinski grounded out (second to first); 0 R, 1 H, 0 E, 1 LOB. Cardinals 2, Phillies 0. CARDINALS 2ND: Herr singled to left; Herr stole second; Reitz grounded out (third to first); Vuckovich grounded out (second to first) [Herr to third]; Oberkfell lined to shortstop; 0 R, 1 H, 0 E, 1 LOB. Cardinals 2, Phillies 0. PHILLIES 2ND: Moreland grounded out (third to first); Maddox grounded out (shortstop to first); Trillo made an out to right; 0 R, 0 H, 0 E, 0 LOB. Cardinals 2, Phillies 0. CARDINALS 3RD: Scott made an out to center; Hernandez walked; Hernandez was caught stealing second (catcher to shortstop); Simmons walked; Hendrick struck out; 0 R, 0 H, 0 E, 1 LOB. Cardinals 2, Phillies 0. PHILLIES 3RD: Bowa made an out to center; Walk struck out; Rose struck out; 0 R, 0 H, 0 E, 0 LOB. Cardinals 2, Phillies 0. CARDINALS 4TH: Durham singled to left; Durham stole second; Herr made an out to left [Durham to third]; Reitz hit a sacrifice fly to right [Durham scored]; Vuckovich grounded out (pitcher to first); ball hit Walk on left calf; 1 R, 1 H, 0 E, 0 LOB. Cardinals 3, Phillies 0. PHILLIES 4TH: McBride was hit by a pitch; McBride was caught stealing second (catcher to second); Schmidt grounded out (shortstop to first); Luzinski walked; Moreland grounded out (first unassisted); 0 R, 0 H, 0 E, 1 LOB. Cardinals 3, Phillies 0. CARDINALS 5TH: NOLES REPLACED WALK (PITCHING); Oberkfell singled to left; Scott grounded out (first to second to first) [Oberkfell to second]; Hernandez walked; Simmons walked [Oberkfell to third, Hernandez to second]; BRUSSTAR REPLACED NOLES (PITCHING); Hendrick struck out; Durham homered [Oberkfell scored, Hernandez scored, Simmons scored]; Herr singled to center; Reitz singled to center [Herr to second]; Vuckovich singled to right [Herr to third, Reitz to second]; Oberkfell popped to second; 4 R, 5 H, 0 E, 3 LOB. Cardinals 7, Phillies 0. PHILLIES 5TH: Maddox singled to center; Trillo grounded into a double play (third to second to first) [Maddox out at second]; Bowa walked; MCCARVER BATTED FOR BRUSSTAR; McCarver made an out to right; 0 R, 1 H, 0 E, 1 LOB. Cardinals 7, Phillies 0. CARDINALS 6TH: DAVIS REPLACED MCCARVER (PITCHING); AVILES REPLACED BOWA (PLAYING SS); Scott struck out; Debut game for Mark Davis; Hernandez walked; Simmons popped to third in foul territory; Hendrick forced Hernandez (third to second); 0 R, 0 H, 0 E, 1 LOB. Cardinals 7, Phillies 0. PHILLIES 6TH: Rose grounded out (second to first); McBride singled to second; Schmidt singled to center [McBride to third (error by Scott)]; Luzinski hit a sacrifice fly to center [McBride scored]; Moreland singled to right [Schmidt to third]; Maddox singled to shortstop [Schmidt scored, Moreland to second]; Trillo made an out to right; 2 R, 4 H, 1 E, 2 LOB. Cardinals 7, Phillies 2. CARDINALS 7TH: Durham grounded out (second to first); Herr made an out to left; Reitz made an out to right; 0 R, 0 H, 0 E, 0 LOB. Cardinals 7, Phillies 2. PHILLIES 7TH: Aviles made an out to right; GROSS BATTED FOR DAVIS; Gross singled to center; Rose doubled to left [Gross scored]; McBride grounded out (first to pitcher); Schmidt singled to center [Rose scored]; URREA REPLACED VUCKOVICH (PITCHING); Luzinski singled to right [Schmidt to third]; Moreland made an out to right; 2 R, 4 H, 0 E, 2 LOB. Cardinals 7, Phillies 4. CARDINALS 8TH: REED REPLACED GROSS (PITCHING); Urrea singled to right; Oberkfell made an out to left; Scott forced Urrea (third to second); Scott stole second; Hernandez struck out; 0 R, 1 H, 0 E, 1 LOB. Cardinals 7, Phillies 4. PHILLIES 8TH: Maddox struck out; Trillo made an out to center; G. VUKOVICH BATTED FOR AVILES; G. Vukovich singled to shortstop; UNSER BATTED FOR REED; Unser grounded out (first unassisted); 0 R, 1 H, 0 E, 1 LOB. Cardinals 7, Phillies 4. CARDINALS 9TH: LERCH REPLACED UNSER (PITCHING); AGUAYO REPLACED G. VUKOVICH (PLAYING SS); Simmons was called out on strikes; Hendrick struck out; Durham made an out to center; 0 R, 0 H, 0 E, 0 LOB. Cardinals 7, Phillies 4. PHILLIES 9TH: LANDRUM REPLACED DURHAM (PLAYING LF); Rose grounded out (first unassisted); McBride walked; Schmidt popped to second; Luzinski popped to shortstop; 0 R, 0 H, 0 E, 1 LOB. Cardinals 7, Phillies 4.
