|| 14,829 || 59–72 |- style="background:#fbb" | 132 || September 4 || Braves || 5–9 (10) || Juan Pizarro (5–2) || Turk Farrell (7–8) || None || 14,989 || 59–73 |- style="background:#fbb" | 133 || September 5 || Redlegs || 4–8 || Don Newcombe (6–11) || Robin Roberts (14–13) || Brooks Lawrence (4) || 10,530 || 59–74 |- style="background:#fbb" | 134 || September 6 || Redlegs || 2–10 || Bob Purkey (16–9) || Curt Simmons (7–14) || None || 5,559 || 59–75 |- style="background:#fbb" | 135 || September 7 (1) || Redlegs || 4–6 || Hal Jeffcoat (6–8) || Turk Farrell (7–9) || None || see 2nd game || 59–76 |- style="background:#fbb" | 136 || September 7 (2) || Redlegs || 2–9 || Joe Nuxhall (12–10) || Seth Morehead (1–5) || Orlando Peña (2) || 12,081 || 59–77 |- style="background:#bfb" | 137 || September 9 || Dodgers || 4–3 || Jack Sanford (9–12) || Sandy Koufax (10–10) || Jack Meyer (2) || 8,359 || 60–77 |- style="background:#bfb" | 138 || September 10 || Dodgers || 8–6 || Robin Roberts (15–13) || Don Drysdale (11–13) || Don Erickson (1) || 5,106 || 61–77 |- style="background:#bfb" | 139 || September 11 || Dodgers || 4–3 || Turk Farrell (8–9) || Johnny Podres (13–13) || None || 4,382 || 62–77 |- style="background:#fbb" | 140 || September 12 (1) || Giants || 2–5 || Rubén Gómez (9–12) || Don Cardwell (2–5) || Al Worthington (4) || see 2nd game || 62–78 |- style="background:#fbb" | 141 || September 12 (2) || Giants || 2–19 || Johnny Antonelli (15–12) || Ray Semproch (13–10) || None || 16,560 || 62–79 |- style="background:#fbb" | 142 || September 13 || Giants || 5–6 || Gordon Jones (3–1) || Seth Morehead (1–6) || Don Johnson (1) || 6,502 || 62–80 |- style="background:#fbb" | 143 || September 14 || Cardinals || 3–6 || Sam Jones (13–11) || Jack Sanford (9–13) || Jim Brosnan (4) || 7,802 || 62–81 |- style="background:#bfb" | 144 || September 15 || Cardinals || 6–2 || Robin Roberts (16–13) || Vinegar Bend Mizell (10–13) || None || 5,988 || 63–81 |- style="background:#fbb" | 145 || September 16 || Cubs || 8–10 (10) || John Buzhardt (1–0) || Don Erickson (0–1) || Dave Hillman (1) || 4,300 || 63–82 |- style="background:#fbb" | 146 || September 17 || Cubs || 2–6 (7) || Bob Anderson (3–1) || Ray Semproch