|- style="background:#fbb" | 51 || June 7 || Expos || 1–3 || David Palmer (4–5) || Steve Carlton (1–6) || Jeff Reardon (16) || 21,039 || 18–33 |- style="background:#fbb" | 52 || June 8 || Expos || 3–4 || Bryn Smith (6–2) || Shane Rawley (4–5) || Jeff Reardon (17) || 22,486 || 18–34 |- style="background:#bfb" | 53 || June 9 || Expos || 4–1 || Kevin Gross (5–6) || Joe Hesketh (5–3) || Kent Tekulve (4) || 22,628 || 19–34 |- style="background:#bfb" | 54 || June 10 || Mets || 6–4 || John Denny (3–5) || Sid Fernandez (1–3) || None || 22,183 || 20–34 |- style="background:#bfb" | 55 || June 11 || Mets || 26–7 || Charles Hudson (2–6) || Tom Gorman (3–3) || None || 22,591 || 21–34 |- style="background:#fbb" | 56 || June 12 || Mets || 3–7 (11) || Rick Aguilera (1–0) || Dave Rucker (1–1) || None || 22,455 || 21–35 |- style="background:#bfb" | 57 || June 13 || Mets || 5–4 || Shane Rawley (5–5) || Jesse Orosco (1–3) || None || 23,381 || 22–35 |- style="background:#fbb" | 58 || June 14 || @ Pirates || 2–3 || José DeLeón (2–8) || Don Carman (0–1) || Don Robinson (1) || 10,211 || 22–36 |- style="background:#bfb" | 59 || June 15 || @ Pirates || 13–3 || John Denny (4–5) || Rick Rhoden (4–7) || None || 10,897 || 23–36 |- style="background:#bfb" | 60 || June 16 || @ Pirates || 3–2 || Charles Hudson (3–6) || Rick Reuschel (3–1) || Kent Tekulve (5) || 14,451 || 24–36 |- style="background:#fbb" | 61 || June 18 || @ Cardinals || 2–6 || John Tudor (5–7) || Steve Carlton (1–7) || None || 34,089 || 24–37 |- style="background:#bfb" | 62 || June 19 || @ Cardinals || 1–0 || Jerry Koosman (2–1) || Joaquín Andújar (12–2) || Don Carman (2) || 32,146 || 25–37 |- style="background:#fbb" | 63 || June 20 || @ Cardinals || 0–5 || Danny Cox (9–2) || Kevin Gross (5–7) || None || 32,397 || 25–38 |- style="background:#bfb" | 64 || June 21 || Pirates || 4–3 (16) || Larry Andersen (2–2) || Jim Winn (2–2) || None || 22,493 || 26–38 |- style="background:#bfb" | 65 || June 22 || Pirates || 5–2 || Don Carman (1–1) || Don Robinson (2–2) || None || 23,623 || 27–38 |- style="background:#bfb" | 66 ||