Farrell (9) || 7,164 || 69–64 |- style="background:#fbb" | 134 || September 4 (1) || @ Braves || 2–8 || Clay Carroll (6–10) || Rick Wise (8–10) || None || 10,060 || 69–65 |- style="background:#fbb" | 135 || September 4 (2) || @ Braves || 1–8 || Tony Cloninger (4–6) || Dick Ellsworth (6–6) || Cecil Upshaw (7) || 10,103 || 69–66 |- style="background:#bfb" | 136 || September 5 || @ Braves || 4–3 (11) || Dick Hall (10–8) || Ed Rakow (3–2) || None || 4,153 || 70–66 |- style="background:#bfb" | 137 || September 6 || Reds || 9–0 || Jim Bunning (15–12) || Jim Maloney (13–10) || None || 7,822 || 71–66 |- style="background:#fbb" | 138 || September 7 || Reds || 1–3 || Milt Pappas (15–10) || Chris Short (7–9) || Ted Abernathy (25) || 7,276 || 71–67 |- style="background:#bfb" | 139 || September 8 || Braves || 4–1 || Rick Wise (9–10) || Clay Carroll (6–11) || None || 11,220 || 72–67 |- style="background:#bfb" | 140 || September 9 || Braves || 4–3 || Larry Jackson (11–13) || Tony Cloninger (4–7) || Turk Farrell (10) || 9,607 || 73–67 |- style="background:#bfb" | 141 || September 10 || Braves || 10–5 || Jim Bunning (16–12) || Ken Johnson (13–8) || Turk Farrell (11) || 5,642 || 74–67 |- style="background:#fbb" | 142 || September 11 || @ Cardinals || 1–5 || Nelson Briles (12–5) || Chris Short (7–10) || None || 18,390 || 74–68 |- style="background:#fbb" | 143 || September 12 || @ Cardinals || 0–6 || Bob Gibson (12–6) || Rick Wise (9–11) || Larry Jaster (3) || 19,932 || 74–69 |- style="background:#bfb" | 144 || September 13 || @ Cardinals || 3–0 || Larry Jackson (12–13) || Dick Hughes (14–6) || None || 18,683 || 75–69 |- style="background:#fbb" | 145 || September 15 (1) || Dodgers || 0–1 || Bill Singer (12–6) || Jim Bunning (16–13) || None || see 2nd game || 75–70 |- style="background:#fbb" | 146 || September 15 (2) || Dodgers || 0–1 || Don Drysdale (11–15) || Chris Short (7–11) || None || 12,018 || 75–71 |- style="background:#bfb" | 147 || September 16 || Dodgers || 8–4 (11) || Turk Farrell (10–4) || Ron Perranoski (6–7) || None || 5,549 || 76–71 |- style="background:#bfb" | 148 || September 17 || Dodgers || 6–1 || Larry Jackson (13–13) || Claude Osteen (16–16) ||