@ Pirates || 3–4 || Roy Face (7–6) || Robin Roberts (8–11) || None || 34,673 || 44–70 |- style="background:#fbb" | 115 || August 17 || @ Pirates || 3–5 || Harvey Haddix (8–7) || John Buzhardt (4–11) || Clem Labine (4) || 33,598 || 44–71 |- style="background:#fbb" | 116 || August 18 || @ Braves || 0–1 || Lew Burdette (14–7) || Gene Conley (7–10) || None || 16,338 || 44–72 |- style="background:#bfb" | 117 || August 19 || @ Braves || 3–2 || Art Mahaffey (2–0) || Juan Pizarro (6–6) || None || 14,723 || 45–72 |- style="background:#fbb" | 118 || August 20 || @ Braves || 0–1 || Bob Buhl (12–6) || Robin Roberts (8–12) || None || 23,985 || 45–73 |- style="background:#fbb" | 119 || August 21 || @ Braves || 2–3 || Warren Spahn (15–7) || John Buzhardt (4–12) || None || 23,169 || 45–74 |- style="background:#fbb" | 120 || August 23 || @ Cardinals || 2–4 || Ray Sadecki (7–7) || Gene Conley (7–11) || Lindy McDaniel (20) || 13,283 || 45–75 |- style="background:#bfb" | 121 || August 24 || @ Cardinals || 5–3 || Art Mahaffey (3–0) || Larry Jackson (11–14) || Chris Short (2) || 10,636 || 46–75 |- style="background:#bfb" | 122 || August 26 || @ Cubs || 4–2 || Robin Roberts (9–12) || Bob Anderson (7–8) || None || 5,021 || 47–75 |- style="background:#fbb" | 123 || August 27 || @ Cubs || 4–5 || Don Elston (7–7) || Chris Short (5–9) || None || 9,657 || 47–76 |- style="background:#fbb" | 124 || August 28 || @ Cubs || 6–8 || Don Cardwell (6–12) || Gene Conley (7–12) || Joe Schaffernoth (3) || 11,383 || 47–77 |- style="background:#bfb" | 125 || August 29 || @ Giants || 2–0 || Art Mahaffey (4–0) || Mike McCormick (11–10) || None || 10,062 || 48–77 |- style="background:#fbb" | 126 || August 30 || @ Giants || 1–2 || Sam Jones (15–14) || Robin Roberts (9–13) || None || 7,014 || 48–78 |- style="background:#fbb" | 127 || August 31 || @ Dodgers || 1–3 || Roger Craig (6–1) || John Buzhardt (4–13) || None || 12,586 || 48–79 |- |- style="background:#fbb" | 128 || September 1 || @ Dodgers || 2–3 (11) || Don Drysdale (12–13) || Turk Farrell (9–5) || None || 28,946 || 48–80 |- style="background:#bfb" | 129 || September 3 ||