H2H data updated: 2026-09-14 00:00 UTC
Julie Filkoff holds a 1–0 lead over Sonoe Yonezawa in their WTA head-to-head. Across 1 main-draw meeting, Julie Filkoff leads 1–0 on hard courts. Most recently, Julie Filkoff won the 1980 Sioux City round of 16 6-1 1-6 6-2.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Julie Filkoff | 6-1 1-6 6-2 | Sonoe Yonezawa | Match data | Jul 13, 1980* | R16 | Sioux City | WTA 250 | Hard |
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 |
| Julie Filkoff | — | — | — | 1,516 | 11 | 22 | 33.3% | 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 | Julie Filkoff | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1978 | 1–1 | 50.0% | — | 1,500 | 0 | 0 |
| 1979 | 1–2 | 33.3% | — | 1,513 | 0 | 0 | 1979 | 0–1 | 0.0% | — | 1,485 | 0 | 0 |
| 1980 | 8–9 | 47.1% | — | 1,544 | 0 | 0 | 1980 | 7–12 | 36.8% | — | 1,471 | 0 | 0 |
| 1981 | 0–2 | 0.0% | — | 1,515 | 0 | 0 | 1981 | 0–1 | 0.0% | — | 1,457 | 0 | 0 |
| 1983 | 0–2 | 0.0% | — | 1,487 | 0 | 0 | 1982 | 3–7 | 30.0% | — | 1,420 | 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 | Julie Filkoff | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 3 | 3 | 6 | 50.0% | 1 | 2 | 3 | 33.3% | — | — | — | — |
| 1980 | 3 | 5 | 8 | 37.5% | 1 | 1 | 2 | 50.0% | — | — | — | — | 1982 | 2 | 4 | 6 | 33.3% | — | — | — | — | — | — | — | — |
| 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 | 5 | 7 | 12 | 41.7% | 1 | 2 | 3 | 33.3% | — | — | — | — |
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 | Julie Filkoff | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1978 | 1501 | 98.9 | — | — | — | — | — | — | — | 50.0% | -0.75 | — | — | — | +0.09 |
| 1979 | 1514 | 102.1 | — | — | — | — | — | — | — | 33.3% | -1.50 | — | — | — | -0.03 | 1979 | 1486 | 98.3 | — | — | — | — | — | — | — | 33.3% | -2.00 | 0–1 | — | — | +0.13 |
| 1980 | 1545 | 106.5 | — | — | — | — | +1 | — | — | 43.6% | -0.61 | 4–1 (80%) | 1–3 (25%) | 102.5 | +0.24 | 1980 | 1472 | 94.2 | — | — | — | — | +102 | +30 | — | 34.8% | -1.22 | 6–2 (75%) | 0–3 (0%) | — | +0.59 |
| 1981 | 1515 | 99.1 | — | — | — | — | — | — | — | 20.0% | -1.60 | 0–1 | — | — | +0.36 | 1981 | 1457 | 95.7 | — | — | — | — | — | — | — | 0.0% | -4.00 | — | — | — | +0.03 |
| 1983 | 1487 | 93.3 | — | — | — | — | — | — | — | 0.0% | -3.75 | — | — | — | +0.10 | 1982 | 1420 | 95.3 | — | — | — | — | +121 | — | — | 40.0% | -0.68 | 1–4 (20%) | 3–2 (60%) | 96.8 | +1.14 |
| Career | 1555 | 104.1 | — | — | — | — | +36 | +29 | — | 38.3% | -0.95 | 4–3 (57%) | 1–4 (20%) | 98.8 | +5.24 | Career | 1516 | 93.5 | — | — | — | — | +112 | +30 | — | 36.3% | -1.13 | 7–7 (50%) | 3–5 (38%) | 99.8 | +6.00 |
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 |
|---|---|---|---|---|---|
| Kate Glancy | 1 | 1 | 2 | Jun 17, 1982 | H2H |
| Micki Schillig | 0 | 1 | 1 | Aug 6, 1982 | H2H |
| Paula Coulter | 1 | 0 | 1 | Aug 5, 1982 | H2H |
| Christina Rozwadowski | 0 | 1 | 1 | Jul 29, 1982 | H2H |
| Cathy Classen | 0 | 1 | 1 | Jul 22, 1982 | H2H |