(1) || 9,829 || 14–11 |- style="background:#fbb" | 26 || May 15 || @ Redlegs || 2–7 || Brooks Lawrence (4–1) || Jack Sanford (4–1) || None || 12,442 || 14–12 |- style="background:#fbb" | 27 || May 16 || @ Cardinals || 0–5 || Lindy McDaniel (2–1) || Harvey Haddix (2–3) || None || 5,377 || 14–13 |- style="background:#bfb" | 28 || May 17 || @ Cardinals || 5–3 || Robin Roberts (3–4) || Sam Jones (2–2) || None || 9,367 || 15–13 |- style="background:#bfb" | 29 || May 18 || @ Cardinals || 7–5 || Curt Simmons (3–1) || Lloyd Merritt (1–1) || None || 5,232 || 16–13 |- style="background:#bbb" | – || May 19 (1) || @ Cubs || colspan=6 | Postponed (rain); Makeup: September 17 |- style="background:#bbb" | – || May 19 (2) || @ Cubs || colspan=6 | Postponed (rain); Makeup: September 18 |- style="background:#fffdd0" | 30 || May 21 || @ Braves || 1–1 (5) || None || None || None || 15,936 || 16–13–1 |- style="background:#fbb" | 31 || May 22 || @ Braves || 3–4 (13) || Juan Pizarro (2–2) || Robin Roberts (3–5) || None || 21,775 || 16–14–1 |- style="background:#bfb" | 32 || May 24 || Pirates || 7–3 || Jack Sanford (5–1) || Bob Friend (3–4) || Turk Farrell (1) || 17,340 || 17–14–1 |- style="background:#bfb" | 33 || May 25 || Pirates || 8–6 || Harvey Haddix (3–3) || Ron Kline (0–6) || Turk Farrell (2) || 6,445 || 18–14–1 |- style="background:#fbb" | 34 || May 26 (1) || Pirates || 5–13 || Roy Face (1–3) || Curt Simmons (3–2) || None || see 2nd game || 18–15–1 |- style="background:#bfb" | 35 || May 26 (2) || Pirates || 6–3 || Don Cardwell (3–0) || Luis Arroyo (1–5) || None || 13,557 || 19–15–1 |- style="background:#fbb" | 36 || May 27 || Dodgers || 1–5 || Don Drysdale (4–1) || Robin Roberts (3–6) || None || 20,673 || 19–16–1 |- style="background:#bfb" | 37 || May 28 || @ Giants || 16–6 || Bob Miller (1–1) || Johnny Antonelli (3–6) || None || 4,977 || 20–16–1 |- style="background:#bfb" | 38 || May 29 || @ Giants || 7–5 (10) || Robin Roberts (4–6) || Marv Grissom (0–2) || None || 2,216 || 21–16–1 |- style="background:#bfb" | 39 || May 30 (1) || @ Giants || 2–1 (10) || Curt Simmons