| Singles | |
|---|---|
| 1998 U.S. Men's Clay Court Championships | |
| Champion |  Jim Courier |
| Runner-up | Michael Chang |
| Score | 7–5, 3–6, 7–5 |
| Draw | 32 |
| Seeds | 8 |
| Singles | |
|---|---|
| 1998 U.S. Men's Clay Court Championships | |
| Champion | Jim Courier |
| Runner-up | Michael Chang |
| Score | 7–5, 3–6, 7–5 |
| Draw | 32 |
| Seeds | 8 |
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Michael Chang (final)
Jason Stoltenberg (first round) Jim Courier (champion) Vincent Spadea (first round)
Gianluca Pozzi (second round)
Wayne Black (first round)
Grant Stafford (second round)
Juan Antonio Marín (first round, retired)Thomas Enqvist was the defending champion but lost in the second round to Jaime Yzaga.
First-seeded Marcelo Ríos defeated Richard Fromberg 4–6, 6–4, 7–6(7–3) to win the 1998 Heineken Open singles competition. Jonas Björkman was the champion but did not defend his title.
Second-seeded Magnus Norman defeated Michael Chang 3–6, 6–3, 7–5 in the final to win the singles competition at the 2000 Heineken Open men's tennis tournament. Tommy Haas was the defending champion. but lost in the second round to Juan Balcells
Albert Costa won the singles tennis title at the 1998 Hamburg European Open after Àlex Corretja retired from the final, with the scoreline at 6–2, 6–0, 1–0.
Patricia Wartusch was the defending champion but lost in the second round to Mariana Díaz Oliva.
Steffi Graf was the defending champion but did not compete that year.
Anke Huber won in the final 6–3, 6–0 against Karina Habšudová.
Jana Novotná won the singles tennis title at the 1996 Advanta Championships of Philadelphia after the defending champion Steffi Graf retired in the final, with the scoreline at 6–4.
Anke Huber was the defending champion but did not compete that year.
Conchita Martínez was the defending champion but lost in the semifinals to Sabine Hack.
Pam Shriver was the four-time defending champion but lost in the final 6–2, 6–1 against Claudia Kohde-Kilsch.
First-seeded Ai Sugiyama was the defending champion and won in the final 6–3, 6–3 against Corina Morariu.
Iva Majoli was the defending champion but lost in the second round to Barbara Schett.
Nicolas Kiefer was the defending champion but lost in the first round to Patrick Rafter.
Andrea Gaudenzi was the defending champion but lost in the second round to Jürgen Melzer.
Paradorn Srichaphan was the defending champion and won in the final 6–2, 6–4 against James Blake.
First-seeded Martina Navratilova was the defending champion and won in the final 6–2, 6–3 against Chris Evert.
David Prinosil was the defending champion but did not compete that year.
