style="background:#bfb" | 22 || May 11 || @ Pirates || 3–2 || Robin Roberts (4–1) || Murry Dickson (2–3) || None || 28,452 || 13–8–1 |- style="background:#bfb" | 23 || May 13 || Giants || 7–1 || Curt Simmons (4–1) || Dave Koslo (1–3) || None || 12,596 || 14–8–1 |- style="background:#fbb" | 24 || May 14 (1) || Giants || 3–4 || Larry Jansen (2–3) || Ken Heintzelman (1–2) || None || see 2nd game || 14–9–1 |- style="background:#bfb" | 25 || May 14 (2) || Giants || 9–7 || Jim Konstanty (2–0) || Sheldon Jones (1–4) || Robin Roberts (1) || 25,769 || 15–9–1 |- style="background:#bfb" | 26 || May 16 || Reds || 1–0 || Robin Roberts (5–1) || Ewell Blackwell (2–2) || None || 16,041 || 16–9–1 |- style="background:#bfb" | 27 || May 17 || Reds || 5–4 || Ken Johnson (3–0) || Herm Wehmeier (1–4) || None || 12,655 || 17–9–1 |- style="background:#bbb" | – || May 18 || Reds || colspan=6 | Postponed (rain and wet grounds); Makeup: August 1 as a traditional double-header |- style="background:#bbb" | – || May 19 || Cubs || colspan=6 | Postponed (rain); Makeup: July 25 as a traditional double-header |- style="background:#fbb" | 28 || May 20 || Cubs || 2–7 || Bob Rush (5–0) || Curt Simmons (4–2) || None || 4,020 || 17–10–1 |- style="background:#fbb" | 29 || May 21 (1) || Cardinals || 5–6 || Gerry Staley (3–3) || Robin Roberts (5–2) || Howie Pollet (1) || see 2nd game || 17–11–1 |- style="background:#bfb" | 30 || May 21 (2) || Cardinals || 4–2 || Curt Simmons (5–2) || Cloyd Boyer (1–1) || None || 32,986 || 18–11–1 |- style="background:#fbb" | 31 || May 23 || Pirates || 0–6 || Bill Macdonald (1–0) || Russ Meyer (0–4) || None || 12,428 || 18–12–1 |- style="background:#bfb" | 32 || May 24 || Pirates || 6–3 || Jim Konstanty (3–0) || Bill Werle (3–2) || None || 18,993 || 19–12–1 |- style="background:#bfb" | 33 || May 25 || Pirates || 3–0 || Bob Miller (3–0) || Cliff Chambers (5–4) || None || 5,265 || 20–12–1 |- style="background:#bfb" | 34 || May 26 || @ Giants || 3–2 || Robin Roberts (6–2) || Jack Kramer (0–2) || None || 17,782 || 21–12–1 |- style="background:#bfb" | 35 || May 27 || @ Giants || 8–5 || Curt Simmons (6–2) ||