H2H data updated: 2026-09-13 00:00 UTC
Sonoe Yonezawa holds a 1–0 lead over Lori Kosten in their WTA head-to-head. They have met 1 times in main draws. Most recently, Sonoe Yonezawa won the 1980 Rockwall round of 32 7-6 6-3.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Sonoe Yonezawa | 7-6 6-3 | Lori Kosten | Match data | Jun 26, 1980* | R32 | Rockwall | WTA 250 | — |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sonoe Yonezawa | — | — | — | 1,555 | 14 | 23 | 37.8% | 0 | 0 | 0 | 0 | 0 | 0 |
| Lori Kosten | — | — | — | 1,500 | 1 | 5 | 16.7% | 0 | 0 | 0 | 0 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Sonoe Yonezawa | Lori Kosten | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1978 | 5–8 | 38.5% | — | 1,519 | 0 | 0 | 1980 | 1–4 | 20.0% | — | 1,472 | 0 | 0 |
| 1979 | 1–2 | 33.3% | — | 1,513 | 0 | 0 | 1983 | 0–1 | 0.0% | — | 1,463 | 0 | 0 |
| 1980 | 8–9 | 47.1% | — | 1,544 | 0 | 0 | — | — | — | — | — | — | — |
| 1981 | 0–2 | 0.0% | — | 1,515 | 0 | 0 | — | — | — | — | — | — | — |
| 1983 | 0–2 | 0.0% | — | 1,487 | 0 | 0 | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Sonoe Yonezawa | Lori Kosten | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | ||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | ||
| 1978 | 2 | 3 | 5 | 40.0% | 3 | 3 | 6 | 50.0% | 0 | 1 | 1 | 0.0% | 1980 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 1980 | 3 | 5 | 8 | 37.5% | 1 | 1 | 2 | 50.0% | — | — | — | — | 1983 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 1981 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1983 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 5 | 11 | 16 | 31.2% | 4 | 4 | 8 | 50.0% | 0 | 1 | 1 | 0.0% | Career | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Sonoe Yonezawa | Lori Kosten | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
| 1978 | 1519 | 105.3 | — | — | — | — | +93 | +29 | — | 40.7% | -0.78 | 0–1 | 0–1 | — | +1.27 | 1980 | 1473 | 100.3 | — | — | — | — | +70 | — | — | 20.0% | -1.20 | — | 0–2 | — | +0.11 |
| 1979 | 1514 | 102.1 | — | — | — | — | — | — | — | 33.3% | -1.50 | — | — | — | -0.03 | 1983 | 1463 | 90.6 | — | — | — | — | — | — | — | 0.0% | -5.50 | — | — | — | +0.02 |
| 1980 | 1545 | 106.5 | — | — | — | — | +1 | — | — | 43.6% | -0.61 | 4–1 (80%) | 1–3 (25%) | 102.5 | +0.24 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1981 | 1515 | 99.1 | — | — | — | — | — | — | — | 20.0% | -1.60 | 0–1 | — | — | +0.36 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1983 | 1487 | 93.3 | — | — | — | — | — | — | — | 0.0% | -3.75 | — | — | — | +0.10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1555 | 104.1 | — | — | — | — | +36 | +29 | — | 38.3% | -0.95 | 4–3 (57%) | 1–4 (20%) | 98.8 | +5.24 | Career | 1500 | 96.2 | — | — | — | — | +70 | — | — | 16.7% | -1.92 | — | 0–2 | — | +2.17 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Renata Tomanova | 0 | 3 | 3 | Nov 17, 1980 | H2H |
| Emiko Sakaguchi | 0 | 1 | 1 | Oct 20, 1983 | H2H |
| Shelley Solomon | 0 | 1 | 1 | Oct 13, 1983 | H2H |
| Susan Mascarin | 0 | 1 | 1 | Oct 22, 1981 | H2H |
| Shelby Torrance | 0 | 1 | 1 | Oct 15, 1981 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Nancy Yeargin | 0 | 1 | 1 | Mar 3, 1983 | H2H |
| Bonnie Gadusek | 0 | 1 | 1 | Jul 13, 1980 | H2H |
| Helen Park | 0 | 1 | 1 | Jul 4, 1980 | H2H |
| Cathy Fink | 1 | 0 | 1 | Jul 3, 1980 | H2H |
| Sonoe Yonezawa | 0 | 1 | 1 | Jun 26, 1980 | H2H |