121 || August 15 || @ Reds || 3–2 || Nino Espinosa (13–9) || Fred Norman (10–9) || None || 36,678 || 61–59 |- style="background:#bfb" | 122 || August 17 || @ Astros || 5–2 || Randy Lerch (7–11) || Frank LaCorte (1–1) || None || 33,782 || 62–59 |- style="background:#bfb" | 123 || August 18 || @ Astros || 1–0 || Larry Christenson (4–8) || J. R. Richard (12–12) || Ron Reed (4) || 37,735 || 63–59 |- style="background:#bfb" | 124 || August 19 || @ Astros || 3–2 || Steve Carlton (12–10) || Joaquín Andújar (12–9) || None || 30,631 || 64–59 |- style="background:#fbb" | 125 || August 20 || Braves || 2–5 || Phil Niekro (16–16) || Ron Reed (9–7) || Gene Garber (20) || 35,156 || 64–60 |- style="background:#fbb" | 126 || August 21 || Braves || 4–5 || Larry Bradford (1–0) || Rawly Eastwick (2–4) || Gene Garber (21) || 30,234 || 64–61 |- style="background:#fbb" | 127 || August 22 || Braves || 3–4 || Eddie Solomon (5–10) || Larry Christenson (4–9) || Gene Garber (22) || 30,349 || 64–62 |- style="background:#bfb" | 128 || August 24 || Astros || 5–3 || Steve Carlton (13–10) || Joaquín Andújar (12–10) || None || 32,124 || 65–62 |- style="background:#fbb" | 129 || August 25 || Astros || 1–3 || Joe Niekro (18–7) || Nino Espinosa (13–10) || Joe Sambito (16) || 43,109 || 65–63 |- style="background:#fbb" | 130 || August 26 || Astros || 1–4 || Pete Ladd (1–0) || Kevin Saucier (1–2) || Joe Sambito (17) || 32,559 || 65–64 |- style="background:#fbb" | 131 || August 27 || Reds || 2–4 || Tom Hume (9–6) || Larry Christenson (4–10) || None || 28,421 || 65–65 |- style="background:#fbb" | 132 || August 28 || Reds || 2–5 || Frank Pastore (3–6) || Steve Carlton (13–11) || Tom Hume (11) || 31,113 || 65–66 |- style="background:#fbb" | 133 || August 29 || Reds || 6–7 || Mario Soto (2–2) || Kevin Saucier (1–3) || Doug Bair (16) || 30,133 || 65–67 |- style="background:#bfb" | 134 || August 31 || @ Braves || 6–2 (6) || Doug Bird (2–0) || Tony Brizzolara (6–9) || None || 6,009 || 66–67 |- |- style="background:#bfb" | 135 || September 1 || @ Braves || 6–4 || Larry Christenson (5–10) || Phil Niekro (17–18) || Ron Reed (5) || 16,990 || 67–67 |-