|| 20,560 || 18–32 |- style="background:#fbb" | 51 || June 3 || Expos || 5–7 || Kevin Gross (6–3) || Larry McWilliams (2–6) || Tim Burke (12) || 35,269 || 18–33 |- style="background:#fbb" | 52 || June 4 || Expos || 4–7 || Dennis Martínez (5–1) || Don Carman (1–9) || Andy McGaffigan (2) || 30,926 || 18–34 |- style="background:#fffdd0" | 53 || June 5 || Pirates || 3–3 || None || None || None || 17,696 || 18–34–1 |- style="background:#bfb" | 54 || June 6 || Pirates || 9–4 || Bob Sebra (2–1) || Brian Fisher (0–2) || Jeff Parrett (1) || 16,783 || 19–34–1 |- style="background:#bfb" | 55 || June 7 || Pirates || 7–5 || Jeff Parrett (2–2) || Bob Kipper (0–3) || Steve Bedrosian (6) || 15,480 || 20–34–1 |- style="background:#bfb" | 56 || June 8 || Pirates || 15–11 || Don Carman (2–9) || Jeff Robinson (2–6) || None || 18,511 || 21–34–1 |- style="background:#fbb" | 57 || June 9 || @ Expos || 0–5 || Dennis Martínez (6–1) || Floyd Youmans (1–4) || None || 15,791 || 21–35–1 |- style="background:#fbb" | 58 || June 10 || @ Expos || 1–9 || Bryn Smith (6–2) || Bruce Ruffin (0–3) || None || 23,981 || 21–36–1 |- style="background:#fbb" | 59 || June 11 || @ Expos || 2–7 || Pascual Pérez (3–7) || Bob Sebra (2–2) || None || 34,365 || 21–37–1 |- style="background:#bfb" | 60 || June 13 || @ Pirates || 10–2 || Ken Howell (6–3) || Morris Madden (1–1) || None || 11,570 || 22–37–1 |- style="background:#fbb" | 61 || June 14 || @ Pirates || 4–6 || John Smiley (6–2) || Don Carman (2–10) || Bill Landrum (2) || 7,407 || 22–38–1 |- style="background:#fbb" | 62 || June 15 || @ Pirates || 3–5 || Doug Drabek (4–5) || Bob Sebra (2–3) || Bill Landrum (3) || 15,428 || 22–39–1 |- style="background:#fbb" | 63 || June 16 || Mets || 11–15 || Randy Myers (6–2) || Steve Bedrosian (2–3) || None || 33,135 || 22–40–1 |- style="background:#fbb" | 64 || June 17 || Mets || 0–1 || Bob Ojeda (4–6) || Larry McWilliams (2–7) || None || 46,570 || 22–41–1 |- style="background:#bfb" | 65 || June 18 || Mets || 6–5 || Jeff Parrett (3–2) || Randy Myers (6–3) || None || 43,689 || 23–41–1 |- style="background:#fbb" | 66 || June 20