|- style="background:#fbb" | 128 || August 25 || Dodgers || 2–5 || Johnny Podres (12–7) || Robin Roberts (11–14) || Larry Sherry (2) || 18,140 || 52–75–1 |- style="background:#bfb" | 129 || August 27 || Giants || 7–2 || Jim Owens (10–11) || Mike McCormick (11–11) || None || || 53–75–1 |- style="background:#bfb" | 130 || August 27 || Giants || 2–1 || Don Cardwell (8–7) || Al Worthington (2–3) || Turk Farrell (6) || 14,538 || 54–75–1 |- style="background:#fbb" | 131 || August 28 || @ Pirates || 0–9 || Vern Law (15–7) || Ed Keegan (0–2) || None || 20,926 || 54–76–1 |- style="background:#fbb" | 132 || August 29 || @ Pirates || 1–11 || Bob Friend (8–15) || Robin Roberts (11–15) || None || 9,714 || 54–77–1 |- style="background:#fbb" | 133 || August 30 || @ Pirates || 1–2 || Harvey Haddix (11–9) || Humberto Robinson (2–3) || None || || 54–78–1 |- style="background:#fbb" | 134 || August 30 || @ Pirates || 6–7 || Roy Face (17–0) || Turk Farrell (1–5) || None || 20,015 || 54–79–1 |- style="background:#bfb" | 135 || September 1 || @ Braves || 5–3 || Don Cardwell (9–7) || Bob Buhl (11–9) || None || 20,522 || 55–79–1 |- style="background:#bfb" | 136 || September 2 || @ Braves || 11–5 || Robin Roberts (12–15) || Lew Burdette (18–14) || None || 18,047 || 56–79–1 |- style="background:#bfb" | 137 || September 4 || Pirates || 3–0 || Jim Owens (11–11) || Harvey Haddix (11–10) || None || 13,136 || 57–79–1 |- style="background:#fbb" | 138 || September 5 || Pirates || 6–7 || Bob Porterfield (1–2) || Turk Farrell (1–6) || Bennie Daniels (1) || 5,993 || 57–80–1 |- style="background:#bfb" | 139 || September 6 || Pirates || 2–1 || Robin Roberts (13–15) || Vern Law (15–9) || None || 9,684 || 58–80–1 |- style="background:#bfb" | 140 || September 7 || @ Reds || 6–4 || Rubén Gómez (3–8) || Orlando Peña (4–8) || None || 5,624 || 59–80–1 |- style="background:#fbb" | 141 || September 9 || @ Dodgers || 0–1 || Don Drysdale (16–12) || Taylor Phillips (1–6) || None || 13,877 || 59–81–1 |- style="background:#fbb" | 142 || September 10 || @ Dodgers || 0–5 || Roger Craig (8–5) || Don Cardwell (9–8) || None || 15,434 || 59–82–1 |- style="background:#bfb" | 143 || September 11 || @ Giants || 1–0