|| Harvey Haddix (2–1) || Jim Konstanty (1–1) || Gerry Staley (1) || 12,281 || 9–3 |- style="background:#fbb" | 13 || April 29 || Cardinals || 0–1 (11) || Al Brazle (1–1) || Curt Simmons (3–1) || None || 16,321 || 9–4 |- style="background:#fffdd0" | 14 || April 30 || Cardinals || 1–1 (5) || None || None || None || 12,870 || 9–4–1 |- |- style="background:#fbb" | 15 || May 1 || Braves || 2–5 || Jim Wilson (1–0) || Karl Drews (2–1) || None || 9,472 || 9–5–1 |- style="background:#bbb" | – || May 2 || Braves || colspan=6 | Postponed (rain); Makeup: July 21 as a traditional double-header |- style="background:#bfb" | 16 || May 3 (1) || Cubs || 5–1 || Robin Roberts (4–1) || Bob Rush (2–2) || None || see 2nd game || 10–5–1 |- style="background:#bfb" | 17 || May 3 (2) || Cubs || 2–0 || Curt Simmons (4–1) || Warren Hacker (1–3) || None || 15,300 || 11–5–1 |- style="background:#bfb" | 18 || May 4 || Cubs || 8–4 || Jim Konstanty (2–1) || Johnny Klippstein (1–1) || None || 8,526 || 12–5–1 |- style="background:#bbb" | – || May 5 || Cubs || colspan=6 | Postponed (rain); Makeup: June 10 as a traditional double-header |- style="background:#bbb" | – || May 6 || Redlegs || colspan=6 | Postponed (rain); Makeup: July 16 as a traditional double-header |- style="background:#bbb" | – || May 7 || Redlegs || colspan=6 | Postponed (rain, wet grounds); Makeup: August 31 (Game 1) as a traditional double-header |- style="background:#bbb" | – || May 8 || @ Dodgers || colspan=6 | Postponed (rain); Makeup: May 9 as a double-header |- style="background:#fbb" | 19 || May 9 (1) || @ Dodgers || 6–7 || Ben Wade (2–0) || Robin Roberts (4–2) || None || 19,257 || 12–6–1 |- style="background:#bfb" | 20 || May 9 (2) || @ Dodgers || 8–4 || Curt Simmons (5–1) || Joe Black (2–2) || None || 25,025 || 13–6–1 |- style="background:#fbb" | 21 || May 10 || @ Dodgers || 0–5 || Billy Loes (4–1) || Karl Drews (2–2) || None || 23,843 || 13–7–1 |- style="background:#bfb" | 22 || May 12 || @ Cardinals || 6–5 || Jim Konstanty (3–1) || Joe Presko (1–2) || Andy Hansen (2) || 9,247 || 14–7–1 |- style="background:#bbb" | – || May 13 || @ Cardinals || colspan=6 | Postponed