| Type: | ATP Challenger |
| Fairfield Challenger | |
| Current: | 2022 Fairfield Challenger |
| Event Name: | Fairfield Challenger |
| Location: | Fairfield, California, United States |
| Venue: | Solano Community College |
| Category: | ATP Challenger Tour |
| Surface: | Hard |
| Draw: | 32S/32Q/16D |
| Prize Money: | $100,000 |
The Fairfield Challenger (currently labeled Northbay Healthcare Men's Pro Championships for sponsorship reasons) is a professional tennis tournament played on hard courts.[1] It is currently part of the ATP Challenger Tour. It is held annually in Fairfield, California, a suburb of San Francisco, since 2015.
| Year | Champion | Runner-up | Score | |
|---|---|---|---|---|
 Zachary Svajda | 6–4, 6–1 | |||
| Michael Mmoh | 6–3, 6–2 | |||
| 2020–2021 | Not held | |||
 Christopher O'Connell | 6–4, 6–4 | |||
| Bjorn Fratangelo | 6–4, 6–3 | |||
| Mackenzie McDonald | 6–4, 6–2 | |||
 Santiago Giraldo | 4–6, 6–4, 6–2 | |||
| Taylor Fritz | 6–3, 6–4 |
| Year | Champions | Runners-up | Score | |
|---|---|---|---|---|
| Evan King Reese Stalder | 7–5, 6–3 | |||
 Julian Cash Henry Patten | 6–3, 6–1 | |||
| 2020–2021 | Not held | |||
Darian King  Peter Polansky | 6–4, 3–6, [12–10] | |||
 Sanchai Ratiwatana Christopher Rungkat | 6–0, 7–6(11–9) | |||
Luke Bambridge  David O'Hare |  Akram El Sallaly  Bernardo Oliveira | 6–4, 6–2 | ||
| Brian Baker Mackenzie McDonald | 6–3, 6–4 | |||
 Johan Brunström Frederik Nielsen | 6–3, 5–7, [10–5] |