| 150 || September 14 || @ Braves || 2–4 || Tom Glavine (19–6) || Curt Schilling (14–14) || Kerry Ligtenberg (28) || 33,367 || 70–80 |- style="background:#fbb" | 151 || September 15 || @ Braves || 0–3 || Kevin Millwood (16–8) || Tyler Green (6–11) || Norm Charlton (1) || 35,478 || 70–81 |- style="background:#fbb" | 152 || September 16 || @ Braves || 1–5 || John Smoltz (16–3) || Carlton Loewer (6–8) || None || 34,961 || 70–82 |- style="background:#fbb" | 153 || September 18 || Expos || 4–11 || Javier Vázquez (5–14) || Mark Portugal (9–5) || Anthony Telford (1) || 14,811 || 70–83 |- style="background:#bfb" | 154 || September 19 || Expos || 4–3 || Curt Schilling (15–14) || Mike Maddux (3–4) || None || 18,701 || 71–83 |- style="background:#bfb" | 155 || September 20 || Expos || 6–3 || Paul Byrd (5–2) || Dustin Hermanson (14–11) || Ricky Bottalico (4) || 26,207 || 72–83 |- style="background:#fbb" | 156 || September 21 || @ Reds || 5–8 || Scott Sullivan (5–5) || Mark Leiter (7–5) || Danny Graves (7) || 12,969 || 72–84 |- style="background:#bfb" | 157 || September 22 || @ Reds || 10–8 (11) || Jerry Spradlin (4–4) || Todd Williams (0–1) || Ricky Bottalico (5) || 13,644 || 73–84 |- style="background:#bfb" | 158 || September 23 || @ Reds || 4–2 || Mark Portugal (10–5) || Steve Parris (6–5) || Ricky Bottalico (6) || 13,376 || 74–84 |- style="background:#bbb" | – || September 25 || @ Marlins || colspan=6 | Postponed (rain); Makeup: September 27 as a traditional double-header |- style="background:#fbb" | 159 || September 26 (1) || @ Marlins || 3–4 (10) || Antonio Alfonseca (4–6) || Yorkis Pérez (0–2) || None || see 2nd game || 74–85 |- style="background:#fbb" | 160 || September 26 (2) || @ Marlins || 0–1 (13) || Rob Stanifer (2–4) || Ricky Bottalico (1–5) || None || 36,267 || 74–86 |- style="background:#fbb" | 161 || September 27 (1) || @ Marlins || 5–6 || Brian Meadows (11–13) || Tyler Green (6–12) || Antonio Alfonseca (8) || see 2nd game || 74–87 |- style="background:#bfb" | 162 || September 27 (2) || @ Marlins || 7–3 || Carlton Loewer' (7–8) || Rafael Medina (2–6) || None'' || 37,007 || 75–87 |- Farm system References 1998 Philadelphia Phillies season at Baseball Reference 1998 Philadelphia Phillies at Baseball Almanac Philadelphia