|| 14,020 || 72–66 |- style="background:#fbb" | 139 || September 5 || Mets || 4–7 || Al Leiter (11–10) || David Coggin (4–5) || None || 16,089 || 72–67 |- style="background:#bfb" | 140 || September 6 || @ Expos || 3–0 || Robert Person (14–6) || Carl Pavano (0–4) || José Mesa (36) || 3,406 || 73–67 |- style="background:#fbb" | 141 || September 7 || @ Expos || 2–4 || Javier Vázquez (16–11) || Brandon Duckworth (2–1) || Scott Stewart (3) || 4,451 || 73–68 |- style="background:#bfb" | 142 || September 8 || @ Expos || 6–0 || Randy Wolf (7–10) || Tomo Ohka (3–8) || None || 5,650 || 74–68 |- style="background:#bfb" | 143 || September 9 || @ Expos || 12–4 || Cliff Politte (2–2) || Graeme Lloyd (8–5) || None || 5,480 || 75–68 |- style="background:#bbb" | – || September 11–13 || @ Braves || colspan=6 | Postponed (September 11 attacks); Makeup: October 2–4 |- style="background:#bbb" | – || September 14–16 || @ Reds || colspan=6 | Postponed (September 11 attacks); Makeup: October 5–7 |- style="background:#bfb" | 144 || September 17 || Braves || 5–2 || Robert Person (15–6) || Greg Maddux (17–9) || José Mesa (37) || 27,910 || 76–68 |- style="background:#bfb" | 145 || September 18 || Braves || 4–3 || Ricky Bottalico (3–4) || John Smoltz (2–3) || None || 23,653 || 77–68 |- style="background:#bfb" | 146 || September 19 || Braves || 5–2 || David Coggin (5–5) || John Burkett (11–11) || José Mesa (38) || 24,036 || 78–68 |- style="background:#fbb" | 147 || September 20 || Braves || 1–5 || Kevin Millwood (6–6) || Randy Wolf (7–11) || None || 26,863 || 78–69 |- style="background:#bfb" | 148 || September 21 || Marlins || 1–0 || José Mesa (2–3) || Vladimir Núñez (4–5) || None || 15,129 || 79–69 |- style="background:#fbb" | 149 || September 22 || Marlins || 2–3 || Matt Clement (9–10) || José Santiago (4–6) || Antonio Alfonseca (27) || 23,017 || 79–70 |- style="background:#bfb" | 150 || September 23 || Marlins || 5–4 (10) || José Mesa (3–3) || Juan Acevedo (1–4) || None || 29,109 || 80–70 |- style="background:#fbb" | 151 || September 25 || Reds || 1–8 || Joey Hamilton (6–9) || David Coggin (5–6) || None || 14,863 || 80–71 |- style="background:#bfb" | 152 || September 26 || Reds || 8–0 || Randy Wolf (8–11) ||