style="background:#bfb" | 120 || August 22 (1) || @ Mets || 2–0 || Rick Wise (7–9) || Tom Seaver (12–10) || None || see 2nd game || 61–59 |- style="background:#bfb" | 121 || August 22 (2) || @ Mets || 11–4 || Larry Jackson (9–12) || Jack Fisher (8–15) || Turk Farrell (6) || 30,951 || 62–59 |- style="background:#bfb" | 122 || August 23 || @ Mets || 3–2 || Dick Ellsworth (5–5) || Cal Koonce (4–3) || Dick Hall (9) || 18,456 || 63–59 |- style="background:#bbb" | – || August 24 || Pirates || colspan=6 | Postponed (rain); Makeup: August 25 as a traditional double-header |- style="background:#bfb" | 123 || August 25 (1) || Pirates || 2–0 || Jim Bunning (14–10) || Tommie Sisk (10–11) || None || see 2nd game || 64–59 |- style="background:#bfb" | 124 || August 25 (2) || Pirates || 6–2 || Chris Short (6–7) || Steve Blass (4–6) || Turk Farrell (7) || 13,696 || 65–59 |- style="background:#bfb" | 125 || August 26 || Pirates || 1–0 || Rick Wise (8–9) || Bob Veale (14–7) || None || 16,454 || 66–59 |- style="background:#bfb" | 126 || August 27 || Pirates || 2–0 (5) || Larry Jackson (10–12) || Woodie Fryman (2–7) || None || 10,953 || 67–59 |- style="background:#bfb" | 127 || August 28 || @ Reds || 3–2 || Dick Ellsworth (6–5) || Gerry Arrigo (6–6) || Turk Farrell (8) || 9,524 || 68–59 |- style="background:#fbb" | 128 || August 29 || @ Reds || 0–1 || Gary Nolan (11–6) || Jim Bunning (14–11) || Ted Abernathy (22) || 8,667 || 68–60 |- style="background:#fbb" | 129 || August 30 || @ Reds || 1–2 || Milt Pappas (14–9) || Chris Short (6–8) || Ted Abernathy (23) || 6,453 || 68–61 |- style="background:#fbb" | 130 || August 31 || @ Pirates || 4–6 || Bob Veale (15–7) || Dick Hall (9–8) || Juan Pizarro (5) || 3,406 || 68–62 |- |- style="background:#fbb" | 131 || September 1 || @ Pirates || 0–3 || Woodie Fryman (3–7) || Larry Jackson (10–13) || None || 6,113 || 68–63 |- style="background:#fbb" | 132 || September 2 || @ Pirates || 1–9 || Al McBean (5–3) || Jim Bunning (14–12) || None || 6,431 || 68–64 |- style="background:#bfb" | 133 || September 3 || @ Pirates || 7–2 || Chris Short (7–8) || Tommie Sisk (10–12) || Turk