2–3 || Billy O'Dell (6–0) || Ray Culp (4–3) || None || 7,556 || 17–21 |- style="background:#fbb" | 39 || May 22 || @ Giants || 2–10 || Jack Sanford (7–3) || Dallas Green (1–1) || None || 6,501 || 17–22 |- style="background:#bfb" | 40 || May 24 || @ Reds || 5–1 || Cal McLish (3–2) || Bob Purkey (1–1) || None || 9,367 || 18–22 |- style="background:#fbb" | 41 || May 25 || @ Reds || 2–5 || Joe Nuxhall (4–2) || Art Mahaffey (2–5) || None || 5,419 || 18–23 |- style="background:#bfb" | 42 || May 26 (1) || @ Reds || 10–4 || Chris Short (1–4) || Jim Maloney (6–2) || Jack Baldschun (6) || see 2nd game || 19–23 |- style="background:#bfb" | 43 || May 26 (2) || @ Reds || 3–0 || Ray Culp (5–3) || Joey Jay (1–8) || None || 14,417 || 20–23 |- style="background:#bfb" | 44 || May 28 || @ Pirates || 5–1 || Cal McLish (4–2) || Bob Friend (5–4) || None || 8,497 || 21–23 |- style="background:#fbb" | 45 || May 30 (1) || @ Pirates || 1–7 || Don Cardwell (2–6) || Art Mahaffey (2–6) || None || see 2nd game || 21–24 |- style="background:#bfb" | 46 || May 30 (2) || @ Pirates || 6–5 || Ray Culp (6–3) || Joe Gibbon (2–3) || Johnny Klippstein (1) || 19,039 || 22–24 |- style="background:#fbb" | 47 || May 31 || Cubs || 1–2 || Bob Buhl (4–4) || Chris Short' (1–5) || Lindy McDaniel (9) || 10,717 || 22–25 |- |- style="background:#fbb" | 48 || June 1 || Cubs || 0–2 || Dick Ellsworth (7–3) || John Boozer (0–1) || None || 3,902 || 22–26 |- style="background:#bfb" | 49 || June 2 (1) || Cubs || 5–2 || Cal McLish (5–2) || Jim Brewer (2–1) || None || see 2nd game || 23–26 |- style="background:#fbb" | 50 || June 2 (2) || Cubs || 2–3 || Barney Schultz (1–0) || Art Mahaffey (2–7) || Lindy McDaniel (10) || 8,009 || 23–27 |- style="background:#bfb" | 51 || June 5 || Cardinals || 6–0 || Ray Culp (7–3) || Curt Simmons (6–2) || None || 35,621 || 24–27 |- style="background:#fbb" | 52 || June 6 || Cardinals || 4–5 || Bob Gibson (4–3) || Chris Short (1–6) || Ray Sadecki (1) || 8,280 || 24–28 |- style="background:#bbb" | –