1998 ATP Tour World Championships – Singles
| Singles | |
|---|---|
| 1998 ATP Tour World Championships | |
| Champion |  Àlex Corretja |
| Runner-up | Carlos Moyá |
| Score | 3–6, 3–6, 7–5, 6–3, 7–5 |
Pete Sampras was the defending champion, but lost in the semifinals to Àlex Corretja.
Àlex Corretja won in the final 3–6, 3–6, 7–5, 6–3, 7–5, against Carlos Moyá in a repeat of that year's French Open final. In doing so, he became the first player to win the season-ending finals without previously winning a Grand Slam title in their career, a feat since achieved a further five times.
Seeds
Pete Sampras (Semifinals)
Marcelo Ríos (Round Robin, withdrew due to a back injury)- Andre Agassi (Round Robin, retired due to a back injury)
Carlos Moyá (Final)- Àlex Corretja (Champion)
Karol Kučera (Round Robin)
Tim Henman (Semifinals)
Yevgeny Kafelnikov (Round Robin)- Greg Rusedski (Round Robin)
- Albert Costa (Round Robin)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- SE = Special exempt
- PR = Protected ranking
- ITF = ITF entry
- JE = Junior exempt
- w/o = Walkover
- r = Retired
- d = Defaulted
- SR = Special ranking
Finals
| Semifinals | Final | ||||||||||||||
| 1 |  Pete Sampras
| 6 | 3 | 63 | |||||||||||
| 5 | Álex Corretja
| 4 | 6 | 77 | |||||||||||
| 5 | Álex Corretja
| 3 | 3 | 7 | 6 | 7 | |||||||||
| 4 | Carlos Moyá
| 6 | 6 | 5 | 3 | 5 | |||||||||
| 7 |  Tim Henman
| 4 | 6 | 5 | |||||||||||
| 4 | Carlos Moyá
| 6 | 3 | 7 | |||||||||||
Red Group
| Sampras
|
Moyá
|
 Kučera
|
 Kafelnikov
|
RR W–L | Set W–L | Game W–L | Standings | ||
| 1 | Pete Sampras
|
6–3, 6–3 | 6–2, 6–1 | 6–2, 6–4 | 3–0 | 6–0 | 36–15 | 1 | |
| 4 | Carlos Moyá
|
3–6, 3–6 | 6–7(5–7), 7–5, 6–3 | 7–5, 7–5 | 2–1 | 4–3 | 39–37 | 2 | |
| 6 | Karol Kučera
|
2–6, 1–6 | 7–6(7–5), 5–7, 3–6 | 7–6(7–3), 3–6, 2–6 | 0–3 | 2–6 | 30–49 | 4 | |
| 8 | Yevgeny Kafelnikov
|
2–6, 4–6 | 5–7, 5–7 | 6–7(3–7), 6–3, 6–2 | 1–2 | 2–5 | 34–38 | 3 |
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.
White Group
 Rios Costa
|
Agassi Rusedski
|
Corretja
|
Henman
|
RR W–L | Set W–L | Game W–L | Standings | ||
| 2 10 |
Marcelo Ríos Albert Costa
|
6–7(5–7), 1–6 (w/ Costa & Rusedski) |
2–6, 4–6 (w/ Costa) |
5–7, 1–6 (w/ Ríos) |
0–1 0–2 |
0–2 0–4 |
6–13 13–25 |
6 4 | |
| 3 9 |
Andre Agassi Greg Rusedski
|
7–6(7–5), 6–1 (w/ Rusedski & Costa) |
7–5, 3–6, 1–2r (w/ Agassi) |
6–2, 6–4 (w/ Rusedski) |
0–1 2–0 |
1–2 4–0 |
11–13 25–13 |
5 3 | |
| 5 | Álex Corretja
|
6–2, 6–4 (w/ Costa) |
5–7, 6–3, 2–1r (w/ Agassi) |
6–7(4–7), 7–6(7–4), 2–6 | 2–1 | 5–3 | 40–36 | 2 | |
| 7 | Tim Henman
|
7–5, 6–1 (w/ Ríos) |
2–6, 4–6 (w/ Rusedski) |
7–6(7–4), 6–7(4–7), 6–2 | 2–1 | 4–3 | 38–33 | 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.