| Doubles | |
|---|---|
| 1998 U.S. Men's Clay Court Championships | |
| Champions |  Grant Stafford  Kevin Ullyett |
| Runners-up |  Michael Tebbutt  Mikael Tillström |
| Score | 4–6, 6–4, 7–5 |
Mark Merklein and Vincent Spadea were the defending champions, but lost in the quarterfinals this year.
Grant Stafford and Kevin Ullyett won the title, defeating Michael Tebbutt and Mikael Tillström 4–6, 6–4, 7–5 in the final.
Luke Jensen / Murphy Jensen (quarterfinals) Dave Randall / Jack Waite (first round) Wayne Black / 
Maurice Ruah (first round) Michael Tebbutt / Mikael Tillström (final)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | L Jensen M Jensen | 5 | 6 | 6 | |||||||||||||||||||||||
B Coupe  T Vanhoudt | 7 | 0 | 1 | 1 | L Jensen M Jensen | 3 | 1 | ||||||||||||||||||||
| WC | G Grant D Witt | 3 | 4 | D Flach R Reneberg | 6 | 6 | |||||||||||||||||||||
| D Flach R Reneberg | 6 | 6 | D Flach R Reneberg | 6 | 2 | ||||||||||||||||||||||
| 4 | M Tebbutt M Tillström | 6 | 6 | 4 | M Tebbutt M Tillström | 7 | 6 | ||||||||||||||||||||
| Q |  M Ardinghi  S Groen | 3 | 3 | 4 | M Tebbutt M Tillström | 7 | 7 | ||||||||||||||||||||
| WC | J Courier  M Knowles | 6 | 3 | K Kinnear P Nyborg | 5 | 6 | |||||||||||||||||||||
| K Kinnear P Nyborg | 7 | 6 | 4 | M Tebbutt M Tillström | 6 | 4 | 5 | ||||||||||||||||||||
| L Pimek B Talbot | 0 | 7 | 6 | G Stafford K Ullyett | 4 | 6 | 7 | ||||||||||||||||||||
| M Keil G Van Emburgh | 6 | 6 | 3 | L Pimek B Talbot | 1 | 3 | |||||||||||||||||||||
| C Haggard P Rosner | 6 | 7 | 7 | C Haggard P Rosner | 6 | 6 | |||||||||||||||||||||
| 3 | W Black M Ruah | 7 | 5 | 5 | C Haggard P Rosner | 4 | 6 | ||||||||||||||||||||
J Gimelstob  S Sargsian | 6 | 4 | G Stafford K Ullyett | 6 | 7 | ||||||||||||||||||||||
| WC | M Merklein V Spadea | 7 | 6 | WC | M Merklein V Spadea | 7 | 6 | 5 | |||||||||||||||||||
| G Stafford K Ullyett | 6 | 6 | G Stafford K Ullyett | 5 | 7 | 7 | |||||||||||||||||||||
| 2 | D Randall J Waite | 0 | 3 | ||||||||||||||||||||||||
Yevgeny Kafelnikov was the defending champion but lost in the first round to Mikael Tillström.
Mikael Tillström defeated Alex Rădulescu 6–4, 4–6, 7–5 to win the 1997 Chennai Open singles event. Thomas Enqvist was the defending champion.
Patrick Rafter defeated Mikael Tillström 6–3, 6–4 to win the 1998 Chennai Open singles event. Tillström was the defending champion.
Defending champion Michael Chang defeated Bohdan Ulihrach in the final, 4–6, 6–3, 6–4, 6–3 to win the men's singles tennis title at the 1997 Indian Wells Masters.
The doubles competition of the 2001 Open SEAT Godó tennis tournament was held in April 2001. Nicklas Kulti and Mikael Tillström were the defending champions but did not compete that year.
Martin Sinner was the defending singles champion but lost in the quarterfinals to Tim Henman.
Yevgeny Kafelnikov was the defending champion but lost in the final 6–2, 7–6(7–4) against Magnus Gustafsson.
Alberto Berasategui was the defending champion but lost in the first round to Mikael Tillström.
Grant Stafford and Kevin Ullyett were the defending champions, but did not participate this year.
Dave Randall and Greg Van Emburgh were the defending champions, but did not participate together this year. Randall partnered Jean-Philippe Fleurian, losing in the first round. Van Emburgh partnered Geoff Grant, losing in the first round.
Grant Stafford and Kevin Ullyett were the defending champions, but Ullyett did not participate this year. Stafford partnered Lan Bale, losing in the quarterfinals.
Nicklas Kulti and Mikael Tillström were the defending champions, and lost in the semifinals to the runners-up.
Magnus Gustafsson was the defending champion, but did not participate.
The 1998 Japan Open Tennis Championships was a tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo in Japan that was part of the International Series Gold of the 1998 ATP Tour and of Tier III of the 1998 WTA Tour. The tournament was held from April 13 through April 19, 1998.
The 1998 Shanghai Open was a men's tennis tournament played on indoor carpet in Shanghai, China that was part of the International Series of the 1998 ATP Tour. It was the third edition of the tournament and was held from 5 October – 12 October.
Juan Antonio Marín was the defending champion but lost in the first round to Andreas Vinciguerra.
Mark Philippoussis was the defending champion and successfully defended his title, by defeating Mikael Tillström 7–5, 4–6, 6–3 in the final.
David Ekerot and Jeff Tarango were the defending champions, but competed this year with different partners. Ekerot teamed up with Peter Nyborg and lost to tournament winners Nicklas Kulti and Mikael Tillström, while Tarango teamed up with Jack Waite and lost in semifinals to tournament runners-up Magnus Gustafsson and Magnus Larsson.
Jim Grabb and Richey Reneberg were the defending champions, but Grabb did not compete this year. Reneberg teamed up with Chris Woodruff and lost in the first round to Michael Tebbutt and Mikael Tillström.
Tommy Haas was the defending champion, but lost in the semifinals to Byron Black.