(10) || Lee Smith (9–9) || Steve Bedrosian (8–5) || None || 8,785 || 71–67 |- style="background:#fbb" | 139 || September 10 || @ Cubs || 7–8 || Guy Hoffman (5–2) || Kent Tekulve (10–4) || Lee Smith (27) || 9,029 || 71–68 |- style="background:#bfb" | 140 || September 12 || Mets || 6–3 || Bruce Ruffin (8–3) || Dwight Gooden (14–6) || Steve Bedrosian (24) || 43,070 || 72–68 |- style="background:#bfb" | 141 || September 13 || Mets || 6–5 || Dan Schatzeder (4–4) || Roger McDowell (13–8) || Steve Bedrosian (25) || 47,108 || 73–68 |- style="background:#bfb" | 142 || September 14 || Mets || 6–0 || Kevin Gross (10–11) || Sid Fernandez (15–5) || None || 38,652 || 74–68 |- style="background:#bfb" | 143 || September 15 || Pirates || 5–0 || Don Carman (9–5) || Rick Rhoden (15–9) || None || 14,089 || 75–68 |- style="background:#bfb" | 144 || September 16 || Pirates || 9–5 || Kent Tekulve (11–4) || Mike Bielecki (6–11) || None || 14,315 || 76–68 |- style="background:#fbb" | 145 || September 17 || Cardinals || 5–8 || Bob Forsch (14–8) || Bruce Ruffin (8–4) || Todd Worrell (34) || 15,737 || 76–69 |- style="background:#bfb" | 146 || September 18 || Cardinals || 4–3 || Mike Maddux (3–6) || Greg Mathews (10–7) || Steve Bedrosian (26) || 12,847 || 77–69 |- style="background:#bfb" | 147 || September 19 || @ Mets || 4–3 || Kevin Gross (11–11) || Sid Fernandez (15–6) || Steve Bedrosian (27) || 35,023 || 78–69 |- style="background:#fbb" | 148 || September 20 || @ Mets || 5–9 || Ron Darling (14–5) || Tom Hume (4–1) || None || 39,104 || 78–70 |- style="background:#bfb" | 149 || September 21 || @ Mets || 7–1 || Marvin Freeman (1–0) || John Mitchell (0–1) || None || 42,631 || 79–70 |- style="background:#bfb" | 150 || September 22 || @ Pirates || 8–4 || Jeff Bittiger (1–1) || Bob Kipper (5–8) || None || 3,934 || 80–70 |- style="background:#fbb" | 151 || September 23 || @ Pirates || 5–6 || Barry Jones (3–4) || Steve Bedrosian (8–6) || None || 3,631 || 80–71 |- style="background:#fbb" | 152 || September 24 || @ Cardinals || 1–7 || Danny Cox (11–12) || Kevin Gross (11–12) || None || 21,272 || 80–72 |- style="background:#fbb" | 153 || September 25 || @ Cardinals || 4–5 || Ray Soff (4–0)