@ Cubs || 10–9 || Jack Meyer (1–1) || Glen Hobbie (2–2) || Turk Farrell (2) || 3,046 || 6–11 |- style="background:#fbb" | 18 || May 4 || @ Cardinals || 3–5 || Marshall Bridges (2–0) || John Buzhardt (0–3) || Lindy McDaniel (4) || 6,226 || 6–12 |- style="background:#bfb" | 19 || May 5 || @ Cardinals || 3–1 || Jim Owens (2–2) || Vinegar Bend Mizell (1–2) || None || 7,812 || 7–12 |- style="background:#bfb" | 20 || May 6 || @ Dodgers || 6–1 (10) || Turk Farrell (2–0) || Sandy Koufax (0–2) || None || 20,165 || 8–12 |- style="background:#fbb" | 21 || May 7 || @ Dodgers || 2–3 (11) || Larry Sherry (3–3) || Rubén Gómez (0–1) || None || 24,082 || 8–13 |- style="background:#bfb" | 22 || May 8 || @ Dodgers || 4–2 || Jack Meyer (2–1) || Ed Rakow (0–1) || Turk Farrell (3) || 20,756 || 9–13 |- style="background:#fbb" | 23 || May 10 || @ Giants || 2–4 || Stu Miller (1–1) || Gene Conley (0–1) || Billy O'Dell (1) || 20,304 || 9–14 |- style="background:#fbb" | 24 || May 11 || @ Giants || 0–1 || Sam Jones (4–2) || Jim Owens (2–3) || None || 11,447 || 9–15 |- style="background:#fbb" | 25 || May 12 || @ Giants || 0–1 || Jack Sanford (3–1) || Robin Roberts (1–3) || None || 10,849 || 9–16 |- style="background:#fbb" | 26 || May 13 || @ Reds || 0–1 || Jim O'Toole (3–2) || Rubén Gómez (0–2) || None || 6,787 || 9–17 |- style="background:#bfb" | 27 || May 14 || @ Reds || 5–2 || Jack Meyer (3–1) || Jay Hook (3–3) || Turk Farrell (4) || 4,239 || 10–17 |- style="background:#bfb" | 28 || May 15 (1) || @ Reds || 14–3 || Gene Conley (1–1) || Cal McLish (2–3) || None || see 2nd game || 11–17 |- style="background:#fbb" | 29 || May 15 (2) || @ Reds || 1–5 || Don Newcombe (2–1) || Humberto Robinson (0–3) || Bill Henry (6) || 17,860 || 11–18 |- style="background:#fbb" | 30 || May 16 || Cardinals || 3–5 || Ernie Broglio (1–1) || Jim Owens (2–4) || None || 11,321 || 11–19 |- style="background:#bbb" | – || May 17 || Cardinals || colspan=6 | Postponed (rain); Makeup: August 9 as a traditional double-header |- style="background:#bbb" | – ||