68–69 |- style="background:#bfb" | 138 || September 13 || @ Pirates || 6–3 || John Denny (11–11) || Bob Walk (1–3) || Kent Tekulve (14) || 4,429 || 69–69 |- style="background:#fbb" | 139 || September 14 || @ Pirates || 3–6 || Lee Tunnell (4–9) || Steve Carlton (1–8) || Cecilio Guante (4) || 5,549 || 69–70 |- style="background:#fbb" | 140 || September 15 || @ Pirates || 4–5 || Rick Reuschel (13–7) || Dave Shipanoff (1–2) || None || 5,961 || 69–71 |- style="background:#fbb" | 141 || September 16 || @ Mets || 0–9 || Dwight Gooden (21–4) || Kevin Gross (14–10) || None || 30,606 || 69–72 |- style="background:#bfb" | 142 || September 17 || @ Mets || 5–1 || Shane Rawley (12–7) || Ed Lynch (10–8) || None || 22,440 || 70–72 |- style="background:#fbb" | 143 || September 18 || Cardinals || 0–7 || Bob Forsch (8–6) || John Denny (11–12) || None || 17,354 || 70–73 |- style="background:#bfb" | 144 || September 19 || Cardinals || 6–3 || Dave Rucker (3–1) || Matt Keough (0–1) || Don Carman (6) || 17,120 || 71–73 |- style="background:#fbb" | 145 || September 20 || Cubs || 1–3 || Reggie Patterson (1–0) || Charles Hudson (7–12) || Lee Smith (30) || 20,207 || 71–74 |- style="background:#fbb" | 146 || September 21 || Cubs || 2–9 || Johnny Abrego (1–0) || Kevin Gross (14–11) || None || 17,779 || 71–75 |- style="background:#fbb" | 147 || September 22 || Cubs || 2–9 || Dennis Eckersley (10–6) || Shane Rawley (12–8) || None || 21,768 || 71–76 |- style="background:#fbb" | 148 || September 23 || Mets || 1–4 || Rick Aguilera (9–6) || Freddie Toliver (0–2) || Roger McDowell (16) || 15,295 || 71–77 |- style="background:#fbb" | 149 || September 24 || Mets || 1–7 || Sid Fernandez (8–9) || Dave Rucker (3–2) || None || 14,398 || 71–78 |- style="background:#fbb" | 150 || September 25 || @ Cardinals || 3–6 || Danny Cox (17–9) || Charles Hudson (7–13) || Jeff Lahti (18) || 17,733 || 71–79 |- style="background:#fbb" | 151 || September 26 || @ Cardinals || 0–5 || John Tudor (20–8) || Kevin Gross (14–12) || None || 23,598 || 71–80 |- style="background:#fbb" | 152 || September 27 || @ Cubs || 7–9 || Jay Baller (2–3) || Kent Tekulve (4–10) || Lee Smith (31) || 9,258 || 71–81 |- style="background:#fbb"