| 46 || May 31 || Cubs || 10–2 || Charles Hudson (6–3) || Chuck Rainey (3–4) || None || 25,044 || 27–19 |- |- style="background:#fbb" | 47 || June 1 || Cubs || 3–12 || Rick Reuschel (3–1) || Marty Bystrom (2–2) || None || 30,076 || 27–20 |- style="background:#bfb" | 48 || June 2 || Cubs || 3–2 || Al Holland (4–2) || Lee Smith (3–3) || None || 40,102 || 28–20 |- style="background:#fbb" | 49 || June 3 || Cubs || 2–11 || Steve Trout (7–3) || Kevin Gross (1–1) || Warren Brusstar (2) || 30,278 || 28–21 |- style="background:#fbb" | 50 || June 4 || @ Cardinals || 3–4 (11) || Bruce Sutter (2–3) || Al Holland (4–3) || None || 27,131 || 28–22 |- style="background:#fbb" | 51 || June 5 || @ Cardinals || 3–5 || Joaquín Andújar (10–4) || Charles Hudson (6–4) || Bruce Sutter (13) || 23,921 || 28–23 |- style="background:#fbb" | 52 || June 6 || @ Cardinals || 3–4 || Neil Allen (3–1) || Bill Campbell (3–1) || None || 24,025 || 28–24 |- style="background:#bfb" | 53 || June 8 (1) || Pirates || 5–4 || Jerry Koosman (5–6) || John Candelaria (5–5) || Al Holland (11) || see 2nd game || 29–24 |- style="background:#bfb" | 54 || June 8 (2) || Pirates || 2–1 || Kevin Gross (2–1) || Larry McWilliams (2–4) || Al Holland (12) || 31,133 || 30–24 |- style="background:#bfb" | 55 || June 9 || Pirates || 6–5 || Steve Carlton (3–3) || John Tudor (4–3) || Al Holland (13) || 31,981 || 31–24 |- style="background:#fbb" | 56 || June 10 || Pirates || 6–12 (12) || Cecilio Guante (2–2) || Jim Kern (0–1) || None || 32,996 || 31–25 |- style="background:#fbb" | 57 || June 11 || Cardinals || 4–6 || Danny Cox (3–7) || Marty Bystrom (2–3) || Bruce Sutter (15) || 20,844 || 31–26 |- style="background:#fbb" | 58 || June 12 || Cardinals || 2–7 || Ricky Horton (2–0) || Kevin Gross (2–2) || Neil Allen (3) || 22,265 || 31–27 |- style="background:#bfb" | 59 || June 13 || Cardinals || 4–1 || Jerry Koosman (6–6) || Dave LaPoint (6–7) || None || 22,212 || 32–27 |- style="background:#bfb" | 60 || June 14 || @ Cubs || 11–2 || Steve Carlton (4–3) || Rich Bordi (2–1) || None || 23,373 || 33–27 |- style="background:#bfb"