style="background:#fbb" | 22 || May 11 || Cubs || 2–4 || Emil Kush (3–0) || Ken Heintzelman (4–1) || None || 7,433 || 10–12 |- style="background:#bfb" | 23 || May 12 || Cubs || 4–3 || Hank Borowy (2–2) || Bob Rush (1–4) || None || 2,506 || 11–12 |- style="background:#fbb" | 24 || May 13 || @ Giants || 1–9 || Larry Jansen (3–2) || Russ Meyer (2–2) || None || 21,765 || 11–13 |- style="background:#fbb" | 25 || May 14 || @ Giants || 2–12 || Sheldon Jones (4–3) || Robin Roberts (2–3) || None || 17,867 || 11–14 |- style="background:#fbb" | 26 || May 15 || @ Giants || 3–7 || Monty Kennedy (3–2) || Curt Simmons (0–2) || None || 24,637 || 11–15 |- style="background:#bfb" | 27 || May 17 || @ Cardinals || 5–4 (12) || Robin Roberts (3–3) || Al Brazle (3–2) || None || 12,357 || 12–15 |- style="background:#bfb" | 28 || May 18 || @ Cardinals || 3–2 || Curt Simmons (1–2) || Ted Wilks (2–2) || None || 2,666 || 13–15 |- style="background:#bbb" | – || May 19 || @ Cubs || colspan=6 | Postponed (weather, wet grounds, threatening weather); Makeup: June 15 as a traditional double-header |- style="background:#bbb" | – || May 20 || @ Cubs || colspan=6 | Postponed (cold); Makeup: July 30 as a traditional double-header |- style="background:#bfb" | 29 || May 21 || @ Cubs || 5–1 || Hank Borowy (3–2) || Dutch Leonard (1–4) || None || 11,839 || 14–15 |- style="background:#bfb" | 30 || May 22 (1) || @ Pirates || 6–5 || Robin Roberts (4–3) || Elmer Riddle (0–4) || Jim Konstanty (1) || 31,467 || 15–15 |- style="background:#bbb" | – || May 22 (2) || @ Pirates || colspan=6 | Postponed (rain and wet grounds); Makeup: June 20 |- style="background:#fbb" | 31 || May 24 || @ Reds || 3–4 (11) || Harry Gumbert (2–1) || Curt Simmons (1–3) || None || 16,111 || 15–16 |- style="background:#fbb" | 32 || May 25 || @ Reds || 2–3 || Buddy Lively (4–1) || Ken Heintzelman (4–2) || None || 4,870 || 15–17 |- style="background:#bfb" | 33 || May 27 || Giants || 9–3 || Curt Simmons (2–3) || Clint Hartung (4–4) || Jim Konstanty (2) || 10,397 || 16–17 |- style="background:#bfb" | 34 || May 28 || Giants || 5–2 || Hank Borowy (4–2)