Makeup: August 13 as a traditional double-header |- style="background:#bfb" | 20 || May 16 || Giants || 12–3 || Bucky Walters (3–3) || Hal Schumacher (2–2) || None || 1,500 || 5–15 |- style="background:#fbb" | 21 || May 17 || Reds || 1–13 || Paul Derringer (5–2) || Claude Passeau (1–2) || None || 1,500 || 5–16 |- style="background:#bbb" | – || May 18 || Reds || colspan=6 | Postponed (rain); Makeup: June 26 as a traditional double-header |- style="background:#bfb" | 22 || May 19 || Reds || 5–4 || Hugh Mulcahy (2–4) || Joe Cascarella (2–1) || None || 1,000 || 6–16 |- style="background:#fbb" | 23 || May 20 || Cubs || 7–16 || Tex Carleton (4–2) || Bucky Walters (3–4) || Jack Russell (2) || 2,964 || 6–17 |- style="background:#fbb" | 24 || May 21 || Cubs || 1–10 || Larry French (2–4) || Claude Passeau (1–3) || None || 5,000 || 6–18 |- style="background:#bfb" | 25 || May 22 || Cardinals || 2–1 || Pete Sivess (1–0) || Bill McGee (2–1) || None || 5,000 || 7–18 |- style="background:#bfb" | 26 || May 23 || Cardinals || 7–6 || Hugh Mulcahy (3–4) || Mike Ryba (0–1) || None || 1,000 || 8–18 |- style="background:#bbb" | – || May 24 || Pirates || colspan=6 | Postponed (rain and wet grounds); Makeup: June 19 as a traditional double-header |- style="background:#bfb" | 27 || May 25 || Pirates || 2–1 || Bucky Walters (4–4) || Jim Tobin (3–3) || None || 1,000 || 9–18 |- style="background:#bbb" | – || May 26 || Pirates || colspan=6 | Postponed (rain); Makeup: September 18 as a traditional double-header |- style="background:#bbb" | – || May 27 || @ Giants || colspan=6 | Postponed (rain and wet grounds); Makeup: May 28 as a traditional double-header |- style="background:#fbb" | 28 || May 28 || @ Giants || 4–5 || Cliff Melton (7–1) || Hugh Mulcahy (3–5) || Dick Coffman (5) || || 9–19 |- style="background:#fbb" | 29 || May 28 || @ Giants || 0–11 || Carl Hubbell (6–1) || Pete Sivess (1–1) || None || 26,476 || 9–20 |- style="background:#fbb" | 30 || May 29 || @ Giants || 6–7 || Harry Gumbert (4–3) || Bucky Walters (4–5) || Jumbo Brown (1) || 14,889 || 9–21 |- style="background:#bfb" | 31 || May 30 || @ Dodgers || 9–5 || Claude Passeau (2–3) || Vito Tamulis