Final results from the Corvallis Championships held at Timberhill Tennis Club January 9-11, 1998.
Men's Singles | Women's Singles | Men's Doubles | Women's Doubles | Mixed Doubles
| Men’s Open Singles | Mark Quinney (Eugene) def. Nick Williams (Corvallis) 6/4, 6/0 |
| Men’s 35 Singles | Mitch Perkins (Seattle) def. Dave Walloch (Beaverton) 6/1, 6/0 |
| Men’s 40 Singles | Tom Lonergan (Woodburn) def. Mitch Whitehurst (Portland) 7/6, 6/4 |
| Men’s 45 Singles | Ken Currens (Olympia) def. Mike Hyne (Aloha) default |
| Men’s 50 Singles | Steve Kubota (Puyallup) def. Marv Parsons (Woodinville) 6/0, 6/3 |
| Women’s Open Singles | Angie Cummins (Vancouver) def. Melisa Biscayno (Federal Way) 6/3, 7/5 |
| Women’s 35 Singles | Nancy Cox (Salem) def. Coleen Conky (West Linn) 7/6, 6/2 |
| Women’s 40 Singles | Helen Burr (Roseberg) def. Sandy Kershner (Tigard) 3/6, 6/2, 6/2 |
| Men’s Open Doubles | Laith Al-Agba (Bremerton) / Steve Kubota (Puyallup) def. Chris Atzet (Portland) / Adam Gagnon (Portland) 6/4, 6/2 |
| Men’s 35 Doubles | Mike Turner (Portland) / Dwayne Tyner (Vancouver) def. Steve Alley (Corvallis) / Steve Bolstad (Portland) 6/4, 3/6, 7/6 |
| Men’s 45 Doubles | Ken Currens (Olympia) / Eric Evett (Corvallis) def. PD Vo (Corvallis) / Dave Traut (Corvallis) 6/4, 6/4 |
| Men’s 50 Doubles | George Kraft (Seattle) / Marv Parsons (Woodinville) def. Jim Jackson (Lake Oswego) / Don Tisdel (Lake Oswego) default |
| Women’s 35 Doubles | Dana Barnes (Beaverton) / Dianne Larsell (Portland) def. Char Anderson (Lake Oswego) / Coleen Conkey ( (West Linn) 6/1, 6/1 |
| Women’s 45 Doubles | Laura Ketchum (Salem) / Dianne Baumgartner (Salem) def. Marsha Ishii (Salem) / Vicki Hand (Salem) 6/4, 0/6, 6/3 |
| Women’s 50 Doubles | Laura Ketchum (Salem) / Vicki Hand (Salem) def. Ruth Hopkins (Tigard) / Kris Kash (Beaverton) 6/3, 6/3 |
| Mixed Open Doubles | Melisa Biscayno (Federal Way) / Mark Hanson (Seattle) def. Craig Horn (Salem) / Ashley Campbell (Salem) 6/4, 6/4 |
| Mixed 35 Doubles | Craig Koessler (Tualatin) / Nancy Cox (Salem) def. Helen Burr (Roseberg) / Donald Neuner (Roseberg) 6/2, 3/6, 7/5 |
| Mixed 45 Doubles | Gregg & Linda Conn (Vancouver) def. Ric Harris (Albany) / Lyn Wyatt (Corvallis) 6/4, 7/5 |