45 || May 30 || Braves || 6–2 || Steve Carlton (6–6) || Rick Mahler (4–4) || None || 35,662 || 24–21 |- style="background:#bfb" | 46 || May 31 || Reds || 5–4 (15) || Sid Monge (2–0) || Bob Shirley (2–3) || None || 22,708 || 25–21 |- |- style="background:#fbb" | 47 || June 1 || Reds || 1–4 (7) || Greg A. Harris (2–0) || Mike Krukow (4–4) || None || 20,102 || 25–22 |- style="background:#bfb" | 48 || June 2 || Reds || 4–2 || Dick Ruthven (5–3) || Bruce Berenyi (4–5) || Warren Brusstar (2) || 22,960 || 26–22 |- style="background:#fbb" | 49 || June 4 || @ Astros || 3–8 || Vern Ruhle (3–3) || Ed Farmer (1–4) || None || 23,362 || 26–23 |- style="background:#bfb" | 50 || June 5 || @ Astros || 5–3 || Sparky Lyle (2–1) || Dave Smith (1–3) || None || 35,315 || 27–23 |- style="background:#fbb" | 51 || June 6 || @ Astros || 6–7 || Vern Ruhle (4–3) || Warren Brusstar (2–2) || None || 21,374 || 27–24 |- style="background:#bfb" | 52 || June 7 || Cubs || 7–5 || Sid Monge (3–0) || Lee Smith (1–1) || Ed Farmer (6) || 30,146 || 28–24 |- style="background:#bfb" | 53 || June 8 || Cubs || 5–2 || Marty Bystrom (1–0) || Tom Filer (0–1) || Sparky Lyle (2) || 30,289 || 29–24 |- style="background:#bfb" | 54 || June 9 || Cubs || 4–2 || Steve Carlton (7–6) || Ferguson Jenkins (3–8) || None || 31,099 || 30–24 |- style="background:#fbb" | 55 || June 11 || Pirates || 0–1 || Kent Tekulve (4–2) || Larry Christenson (3–4) || None || 30,870 || 30–25 |- style="background:#fbb" | 56 || June 12 || Pirates || 2–9 || Manny Sarmiento (2–0) || Mike Krukow (4–5) || None || 28,665 || 30–26 |- style="background:#bbb" | – || June 13 || Pirates || colspan=6 | Postponed (rain); Makeup: August 9 as a traditional double-header |- style="background:#fbb" | 57 || June 14 || @ Cubs || 11–12 || Ferguson Jenkins (4–8) || Steve Carlton (7–7) || None || 10,797 || 30–27 |- style="background:#fbb" | 58 || June 15 || @ Cubs || 5–8 || Doug Bird (4–6) || Dick Ruthven (5–4) || Mike Proly (1) || 8,639 || 30–28 |- style="background:#fbb" | 59 || June 16 || @ Cubs || 6–7 (11) || Dick