(4–4) || Rubén Gómez (1–3) || None || 7,312 || 15–25 |- style="background:#fbb" | 41 || May 27 || @ Reds || 4–10 || Bob Purkey (5–5) || Robin Roberts (2–4) || None || 5,348 || 15–26 |- style="background:#bfb" | 42 || May 28 || @ Reds || 4–3 || Jim Owens (3–3) || Joe Nuxhall (2–3) || Ray Semproch (2) || 6,819 || 16–26 |- style="background:#fbb" | 43 || May 29 || @ Braves || 5–6 || Don McMahon (2–0) || Gene Conley (2–2) || None || 20,334 || 16–27 |- style="background:#fbb" | 44 || May 30 || @ Braves || 2–4 || Bob Buhl (3–3) || Don Cardwell (1–3) || None || 18,945 || 16–28 |- style="background:#bfb" | 45 || May 31 || @ Braves || 6–0 || Robin Roberts (3–4) || Lew Burdette (8–3) || None || || 17–28 |- style="background:#fbb" | 46 || May 31 || @ Braves || 1–2 || Warren Spahn (7–5) || Ray Semproch (2–3) || None || 28,590 || 17–29 |- style="background:#bbb" | – || June 2 || Cubs || colspan=6 | Postponed (rain); |- style="background:#bfb" | 47 || June 3 || Cubs || 4–3 || Jim Owens (4–3) || Dave Hillman (3–4) || None || 7,883 || 18–29 |- style="background:#fbb" | 48 || June 4 || Cubs || 2–3 || Don Elston (4–1) || Gene Conley (2–3) || None || 7,445 || 18–30 |- style="background:#bbb" | – || June 5 || Cardinals || colspan=6 | Postponed (rain); |- style="background:#bfb" | 49 || June 6 || Cardinals || 4–3 || Robin Roberts (4–4) || Lindy McDaniel (3–8) || None || 5,940 || 19–30 |- style="background:#bfb" | 50 || June 7 || Cardinals || 11–9 || Jack Meyer (4–2) || Ernie Broglio (0–5) || Gene Conley (1) || || 20–30 |- style="background:#fbb" | 51 || June 7 || Cardinals || 0–2 || Vinegar Bend Mizell (7–2) || Don Cardwell (1–4) || None || 15,742 || 20–31 |- style="background:#fbb" | 52 || June 9 || Dodgers || 2–3 || Stan Williams (3–1) || Ray Semproch (2–4) || Sandy Koufax (1) || 16,575 || 20–32 |- style="background:#bfb" | 53 || June 10 || Dodgers || 2–1 || Gene Conley (3–3) || Danny McDevitt (3–6) || None || 11,079 || 21–32 |- style="background:#fbb" | 54 || June 11 || Dodgers || 0–11 || Johnny Podres (7–2) || Robin Roberts (4–5) || None || 15,819 || 21–33