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Leo Vithoontien
185cm
Leo Vithoontien is a professional tennis player from Japan, 27 years old, ranked No. 725 on the ATP singles rankings as of September 21, 2026. Career-high ranking: No. 625 (June 8, 2026). Vithoontien has won 0 career singles titles from 2 finals. In 2026 the record stands at 15-19 (7-9 at Challenger level, 8-10 at ITF / Futures level). Last match: lost to Bowers 6-1, 7-6(4) in the R1 at M25 East Lansing, August 12, 2026.
The Climb
From the Futures to the Slams
The milestones that mark a professional career, with the ranking at each step.
Call the climb
Say where this player will be, and by when. Graded from the weekly rankings; the record lives on My Slip.
Why we're watching
Recent results
| Date | Tournament | Rd. | Opponent | Result |
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The last ten singles matches, from the results feed. Click a column header to sort.
Career record by surface
Ranking, recent weeks
Titles & finals
Win–loss by level · this season
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