Tournaments
| Year | Tour | Tournament | Surface | Level | Dates | Matches | Champion |
|---|---|---|---|---|---|---|---|
| 1998 | ATP | Davis Cup WG SF: SWE vs ESP | Carpet | Davis Cup | 1998-09-25 | 4 | - |
| 1998 | ATP | Davis Cup WG SF: USA vs ITA | Hard | Davis Cup | 1998-09-25 | 4 | - |
| 1998 | WTA | Tokyo | Hard | WTA Tour | 1998-09-21 | 27 | Monica Seles |
| 1998 | WTA | Fed Cup WG1 F: SUI vs ESP | Hard | BJK Cup | 1998-09-19 | 4 | - |
| 1998 | ATP | Bournemouth | Clay | ATP 500/250 | 1998-09-14 | 31 | Felix Mantilla |
| 1998 | ATP | Bucharest | Clay | ATP 500/250 | 1998-09-14 | 31 | Francisco Clavet |
| 1998 | ATP | Tashkent | Hard | ATP 500/250 | 1998-09-14 | 31 | Tim Henman |
| 1998 | WTA | Kugayama 1 10K | Hard | Davis Cup | 1998-09-07 | 31 | Alicia Molik |
| 1998 | WTA | Kugayama 2 10K | Hard | Davis Cup | 1998-09-07 | 15 | Alicia Molik |
| 1998 | WTA | Kugayama 3 10K | Hard | Davis Cup | 1998-09-07 | 31 | Alicia Molik |
| 1998 | WTA | Kugayama 4 10K | Hard | Davis Cup | 1998-09-07 | 31 | Alicia Molik |
| 1998 | ATP | US Open | Hard | Grand Slam | 1998-08-31 | 127 | Patrick Rafter |
| 1998 | WTA | US Open | Hard | Grand Slam | 1998-08-31 | 127 | Lindsay Davenport |
| 1998 | ATP | Boston | Hard | ATP 500/250 | 1998-08-24 | 31 | Michael Chang |
| 1998 | ATP | Long Island | Hard | ATP 500/250 | 1998-08-24 | 31 | Patrick Rafter |
| 1998 | WTA | New Haven | Hard | WTA Tour | 1998-08-24 | 27 | Steffi Graf |
| 1998 | WTA | Canadian Open | Hard | WTA Tour | 1998-08-17 | 55 | Monica Seles |
| 1998 | ATP | Indianapolis | Hard | ATP 500/250 | 1998-08-17 | 55 | Alex Corretja |
| 1998 | ATP | New Haven | Hard | ATP 500/250 | 1998-08-17 | 55 | Karol Kucera |
| 1998 | WTA | Boston | Hard | WTA Tour | 1998-08-10 | 29 | Mariaan De Swardt |
| 1998 | ATP | Cincinnati Masters | Hard | Masters 1000 | 1998-08-10 | 55 | Patrick Rafter |
| 1998 | WTA | Manhattan Beach | Hard | WTA Tour | 1998-08-10 | 27 | Lindsay Davenport |
| 1998 | ATP | San Marino | Clay | ATP 500/250 | 1998-08-10 | 31 | Dominik Hrbaty |
| 1998 | ATP | Amsterdam | Clay | ATP 500/250 | 1998-08-03 | 31 | Magnus Norman |
| 1998 | ATP | Canada Masters | Hard | Masters 1000 | 1998-08-03 | 55 | Patrick Rafter |
| 1998 | WTA | Istanbul | Hard | WTA Tour | 1998-08-03 | 31 | Henrieta Nagyova |
| 1998 | WTA | San Diego | Hard | WTA Tour | 1998-08-03 | 27 | Lindsay Davenport |
| 1998 | ATP | Kitzbuhel | Clay | ATP 500/250 | 1998-07-27 | 47 | Albert Costa |
| 1998 | ATP | Los Angeles | Hard | ATP 500/250 | 1998-07-27 | 31 | Andre Agassi |
| 1998 | WTA | Sopot | Clay | WTA Tour | 1998-07-27 | 31 | Henrieta Nagyova |
| 1998 | WTA | Stanford | Hard | WTA Tour | 1998-07-27 | 27 | Lindsay Davenport |
| 1998 | ATP | Umag | Clay | ATP 500/250 | 1998-07-27 | 31 | Bohdan Ulihrach |
| 1998 | WTA | Fed Cup WG1 PO: CRO vs NED | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG1 PO: CZE vs ITA | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG1 PO: RUS vs GER | Hard | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG1 PO: SVK vs BEL | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG1 SF: ESP vs USA | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG1 SF: SUI vs FRA | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG2 PO: AUS vs ARG | Carpet | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG2 PO: AUT vs POL | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG2 PO: BLR vs VEN | Hard | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | WTA | Fed Cup WG2 PO: KOR vs JPN | Clay | BJK Cup | 1998-07-25 | 4 | - |
| 1998 | ATP | Stuttgart Outdoor | Clay | ATP 500/250 | 1998-07-20 | 47 | Gustavo Kuerten |
| 1998 | ATP | Washington | Hard | ATP 500/250 | 1998-07-20 | 55 | Andre Agassi |
| 1998 | ATP | Davis Cup G1 PO: CHI vs COL | Carpet | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G1 PO: KOR vs CHN | Hard | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G1 PO: LIB vs INA | Hard | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G1 PO: MEX vs BAH | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: BUL vs LUX | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: CUB vs GUA | Hard | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: HKG vs PHI | Hard | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: IRL vs MON | Carpet | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: LAT vs GEO | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: PAR vs JAM | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: POL vs EGY | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 PO: QAT vs POC | Hard | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 QF: HUN vs SLO | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 QF: MAR vs BLR | Clay | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 QF: SEN vs CIV | Hard | Davis Cup | 1998-07-17 | 4 | - |
| 1998 | ATP | Davis Cup G2 QF: YUG vs POR | Clay | Davis Cup | 1998-07-17 | 4 | - |