10 || April 20 || Cardinals || 6–2 || Marcelino López (1–0) || Ray Sadecki (0–1) || Jack Baldschun (2) || 5,353 || 5–5 |- style="background:#bfb" | 11 || April 21 (1) || Cardinals || 4–3 (10) || Dallas Green (1–0) || Ed Bauta (0–1) || None || see 2nd game || 6–5 |- style="background:#fbb" | 12 || April 21 (2) || Cardinals || 5–10 || Harry Fanok (2–0) || Art Mahaffey (1–2) || None || 23,187 || 6–6 |- style="background:#bfb" | 13 || April 22 || Mets || 8–6 || Ray Culp (2–1) || Tracy Stallard (0–2) || Jack Baldschun (3) || 3,716 || 7–6 |- style="background:#fbb" | 14 || April 24 || Pirates || 4–6 || Bob Friend (3–0) || Chris Short (0–2) || Roy Face (3) || 4,485 || 7–7 |- style="background:#bfb" | 15 || April 26 || @ Cubs || 5–2 || Art Mahaffey (2–2) || Glen Hobbie (1–2) || None || 4,093 || 8–7 |- style="background:#fbb" | 16 || April 27 || @ Cubs || 2–4 || Larry Jackson (3–2) || Ray Culp (2–2) || None || 10,204 || 8–8 |- style="background:#fbb" | 17 || April 28 || @ Cubs || 1–4 || Bob Buhl (2–2) || Chris Short (0–3) || Don Elston (2) || 11,135 || 8–9 |- style="background:#fbb" | 18 || April 29 || Giants || 3–4 || Jack Fisher (1–2) || Cal McLish (0–2) || None || 8,233 || 8–10 |- style="background:#bbb" | – || April 30 || Giants || colspan=6 | Postponed (rain); Makeup: July 10 |- |- style="background:#bbb" | – || May 1 || Dodgers || colspan=6 | Postponed (rain); Makeup: September 13 as a traditional double-header |- style="background:#fbb" | 19 || May 2 || Dodgers || 2–3 || Ron Perranoski (3–1) || Art Mahaffey (2–3) || None || 11,288 || 8–11 |- style="background:#bfb" | 20 || May 3 || Colt .45s || 4–3 || Jack Hamilton (1–0) || Bob Bruce (1–2) || Jack Baldschun (4) || 5,843 || 9–11 |- style="background:#bfb" | 21 || May 4 || Colt .45s || 7–0 || Ray Culp (3–2) || Ken Johnson (1–4) || None || 3,361 || 10–11 |- style="background:#bfb" | 22 || May 5 (1) || Colt .45s || 6–5 || Jack Hamilton (2–0) || Hal Woodeshick (1–1) || None || see 2nd game || 11–11 |- style="background:#fbb" | 23 || May 5 (2) || Colt .45s || 2–6 || Turk