| 153 || September 28 || @ Cubs || 10–11 || Dennis Eckersley (11–6) || John Denny (11–13) || Lee Smith (32) || 27,875 || 71–82 |- style="background:#fbb" | 154 || September 29 || @ Cubs || 2–6 || Steve Trout (9–6) || Freddie Toliver (0–3) || None || 26,641 || 71–83 |- |- style="background:#bbb" | – || October 1 || @ Expos || colspan=6 | Postponed (rain); Makeup: October 2 as a traditional double-header |- style="background:#fbb" | 155 || October 2 (1) || @ Expos || 1–3 || Bryn Smith (18–5) || Kevin Gross (14–13) || Jeff Reardon (39) || see 2nd game || 71–84 |- style="background:#bfb" | 156 || October 2 (2) || @ Expos || 3–2 || Charles Hudson (8–13) || David Palmer (7–10) || None || 10,178 || 72–84 |- style="background:#bfb" | 157 || October 3 || @ Expos || 8–7 || Shane Rawley (13–8) || Bill Laskey (5–16) || Don Carman (7) || 7,772 || 73–84 |- style="background:#fbb" | 158 || October 4 (1) || Pirates || 2–7 || Bob Walk (2–3) || John Denny (11–14) || José DeLeón (3) || see 2nd game || 73–85 |- style="background:#bfb" | 159 || October 4 (2) || Pirates || 8–5 || Don Carman (9–4) || José DeLeón (2–19) || None || 12,410 || 74–85 |- style="background:#fbb" | 160 || October 5 (1) || Pirates || 2–4 || Larry McWilliams (7–9) || Freddie Toliver (0–4) || Rick Reuschel (1) || see 2nd game || 74–86 |- style="background:#fbb" | 161 || October 5 (2) || Pirates || 0–5 || Mike Bielecki (2–3) || Rocky Childress (0–1) || None || 21,820 || 74–87 |- style="background:#bfb" | 162 || October 6 || Pirates || 5–0 || Kevin Gross' (15–13) || Rick Rhoden (10–15) || None || 13,749 || 75–87 |- Roster Player stats Batting Starters by position Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in Other batters Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in Pitching Starting pitchers Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts Other pitchers Note: G = Games pitched; IP = Innings pitched; W =