style="background:#bbb" | – || April 11 || Marlins || colspan=6 | Postponed (rain); Makeup: June 28 as a traditional double-header |- style="background:#fbb" | 9 || April 13 || @ Braves || 2–4 || Tom Glavine (1–1) || Randy Wolf (0–2) || John Rocker (3) || 31,017 || 6–3 |- style="background:#bfb" | 10 || April 14 || @ Braves || 2–1 || Omar Daal (1–0) || Kevin Millwood (0–2) || José Mesa (4) || 35,979 || 7–3 |- style="background:#fbb" | 11 || April 15 || @ Braves || 0–3 || Odalis Pérez (1–1) || Robert Person (1–1) || John Rocker (4) || 24,472 || 7–4 |- style="background:#bbb" | – || April 16 || @ Cubs || colspan=6 | Postponed (rain); Makeup: April 18 as a traditional double-header |- style="background:#bfb" | 12 || April 17 || @ Cubs || 6–3 || Vicente Padilla (1–1) || Jeff Fassero (0–1) || José Mesa (5) || 18,189 || 8–4 |- style="background:#fbb" | 13 || April 18 (1) || @ Cubs || 3–4 || Kevin Tapani (3–0) || Bruce Chen (0–1) || Jeff Fassero (7) || see 2nd game || 8–5 |- style="background:#fbb" | 14 || April 18 (2) || @ Cubs || 3–5 || Jason Bere (3–0) || Randy Wolf (0–3) || Jeff Fassero (8) || 26,793 || 8–6 |- style="background:#bfb" | 15 || April 20 || Braves || 8–3 || Wayne Gomes (2–0) || Odalis Pérez (1–2) || None || 16,245 || 9–6 |- style="background:#bfb" | 16 || April 21 || Braves || 4–1 || Robert Person (2–1) || Greg Maddux (2–1) || None || 17,123 || 10–6 |- style="background:#bfb" | 17 || April 22 || Braves || 3–2 || Amaury Telemaco (2–0) || John Burkett (0–3) || Wayne Gomes (1) || 26,756 || 11–6 |- style="background:#bfb" | 18 || April 23 || @ Padres || 5–3 || Bruce Chen (1–1) || Adam Eaton (2–2) || Ricky Bottalico (1) || 42,932 || 12–6 |- style="background:#bfb" | 19 || April 24 || @ Padres || 12–7 || Randy Wolf (1–3) || Woody Williams (1–3) || None || 13,872 || 13–6 |- style="background:#bfb" | 20 || April 25 || @ Padres || 5–3 || Omar Daal (2–0) || Brian Tollberg (1–2) || José Mesa (6) || 12,573 || 14–6 |- style="background:#fbb" | 21 || April 26 || @ Padres || 0–11 || Kevin Jarvis (1–2) || Robert Person (2–2) || None || 12,785 || 14–7 |-