style="background:#bfb" | 23 || May 5 || Dodgers || 8–7 || Sparky Lyle (2–1) || Bobby Castillo (0–3) || None || 27,241 || 16–7 |- style="background:#fbb" | 24 || May 6 || Dodgers || 1–2 || Burt Hooton (4–0) || Nino Espinosa (1–2) || None || 25,850 || 16–8 |- style="background:#fbb" | 25 || May 7 || Dodgers || 1–2 || Jerry Reuss (3–1) || Marty Bystrom (2–1) || None || 29,259 || 16–9 |- style="background:#bfb" | 26 || May 8 || Padres || 11–7 || Sparky Lyle (3–1) || Gary Lucas (2–3) || None || 30,830 || 17–9 |- style="background:#bfb" | 27 || May 9 || Padres || 9–6 || Steve Carlton (6–0) || Tim Lollar (1–3) || None || 30,907 || 18–9 |- style="background:#fbb" | 28 || May 10 || Padres || 4–8 || Steve Mura (1–4) || Larry Christenson (1–3) || Gary Lucas (5) || 40,447 || 18–10 |- style="background:#fbb" | 29 || May 12 || @ Giants || 0–4 || Doyle Alexander (5–2) || Nino Espinosa (1–3) || None || 10,307 || 18–11 |- style="background:#fbb" | 30 || May 13 || @ Giants || 2–5 || Allen Ripley (3–3) || Marty Bystrom (2–2) || Greg Minton (6) || 6,946 || 18–12 |- style="background:#bfb" | 31 || May 14 || @ Giants || 3–1 || Dick Ruthven (5–1) || Vida Blue (3–3) || Tug McGraw (3) || 6,561 || 19–12 |- style="background:#bfb" | 32 || May 15 || @ Padres || 2–1 || Steve Carlton (7–0) || Steve Mura (1–5) || None || 15,939 || 20–12 |- style="background:#fbb" | 33 || May 16 || @ Padres || 1–2 || John Littlefield (1–2) || Tug McGraw (1–3) || None || 40,656 || 20–13 |- style="background:#bfb" | 34 || May 17 || @ Padres || 6–3 || Nino Espinosa (2–3) || Juan Eichelberger (3–2) || None || 18,330 || 21–13 |- style="background:#bfb" | 35 || May 18 || @ Dodgers || 4–0 || Marty Bystrom (3–2) || Fernando Valenzuela (8–1) || None || 52,439 || 22–13 |- style="background:#bfb" | 36 || May 19 || @ Dodgers || 3–2 || Dick Ruthven (6–1) || Bob Welch (2–2) || None || 43,812 || 23–13 |- style="background:#fbb" | 37 || May 20 || @ Dodgers || 2–3 (10) || Steve Howe (4–1) || Tug McGraw (1–4) || None || 50,917 || 23–14 |- style="background:#fbb" | 38 || May 22 || @ Pirates