| Draw | |
|---|---|
| 1998 Colonial Classic | |
| Champion |  Mark Philippoussis |
| Runner-up |  Andre Agassi |
| Final score | 6–3, 7–6(3) |
Michael Chang was the defending champion, but chose not to participate that year due to a stomach muscle strain.
Mark Philippoussis won in the final 6–3, 7–6(3), against Andre Agassi.
Pete Sampras (round robin, sixth place) Michael Chang (withdrew due to a stomach muscle strain)
Greg Rusedski (round robin, seventh place)
Thomas Muster (round robin, eighth place)
Gustavo Kuerten (round robin, third place)
Goran Ivanišević (round robin, fourth place) Mark Philippoussis (champion, first place) Andre Agassi (final, second place)
Andrei Medvedev (replaces Michael Chang, Round robin, fifth place)| Final (First/Second place match) | ||||||
| 7 | Mark Philippoussis | 6 | 77 | |||
| 8 | Andre Agassi | 3 | 63 | |||
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| Pete Sampras | Greg Rusedski | Gustavo Kuerten | Mark Philippoussis | RR W–L | Set W–L | Game W–L | Standings | ||
| 1 | Pete Sampras | 7–5, 6–1 | 6–3, 3–6, 4–6 | — | 1–1 | 3–2 | 26–21 | 3 | |
| 3 | Greg Rusedski | 5–7, 1–6 | — | 5–7, 4–6 | 0–2 | 0–4 | 15–26 | 4 | |
| 5 | Gustavo Kuerten | 3–6, 6–3, 6–4 | — | 4–6, 6–3, 6–7(8–10) | 1–1 | 3–3 | 31–29 | 2 | |
| 7 | Mark Philippoussis | — | 7–5, 6–4 | 6–4, 3–6, 7–6(10–8) | 2–0 | 4–1 | 29–25 | 1 |
Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.
| Michael Chang Andrei Medvedev | Thomas Muster | Goran Ivanišević | Andre Agassi | RR W–L | Set W–L | Game W–L | Standings | ||
| 2 9 | Michael Chang Andrei Medvedev | 7–6(7–4), 6–0 (w/ Medvedev) | 6–7(5–7), 3–6 (w/ Medvedev) | — | 0–0 1–1 | 0–0 2–2 | 0–0 22–19 | N/A 3 | |
| 4 | Thomas Muster | 6–7(4–7), 0–6 (w/ Medvedev) | — | 4–6, 0–6 | 0–2 | 0–2 | 10–18 | 4 | |
| 6 | Goran Ivanišević | 7–6(7–5), 6–3 (w/ Medvedev) | — | 4–6, 7–6(7–3), 3–6 | 1–1 | 3–2 | 27–27 | 2 | |
| 8 | Andre Agassi | — | 6–4, 6–0 | 6–4, 6–7(3–7), 6–3 | 2–0 | 4–1 | 30–18 | 1 |
Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.
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