H2H data updated: 2026-09-12 00:00 UTC
Penny Johnson holds a 1–0 lead over Ikuko Shibata in their WTA head-to-head. They have met 1 times in main draws. Most recently, Penny Johnson won the 1979 Tokyo Japan Open round of 16 6-4 6-1.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Penny Johnson | 6-4 6-1 | Ikuko Shibata | Match data | Oct 26, 1979* | R16 | Tokyo Japan Open | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Penny Johnson | — | — | — | 1,532 | 4 | 8 | 33.3% | 0 | 0 | 0 | 0 | 0 | 0 |
| Ikuko Shibata | — | — | — | 1,500 | 0 | 1 | 0.0% | 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.
| Penny Johnson | Ikuko Shibata | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1978 | 0–1 | 0.0% | — | 1,490 | 0 | 0 | 1979 | 0–1 | 0.0% | — | 1,483 | 0 | 0 |
| 1979 | 1–0 | 100.0% | — | 1,507 | 0 | 0 | — | — | — | — | — | — | — |
| 1980 | 3–7 | 30.0% | — | 1,448 | 0 | 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.
| Penny Johnson | Ikuko Shibata | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1491 | 98.6 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | -0.16 | 1979 | 1484 | 96.2 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +0.08 |
| 1979 | 1507 | 103.5 | — | — | — | — | — | — | — | 100.0% | +3.50 | — | — | — | +0.07 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1980 | 1448 | 91.9 | — | — | — | — | — | — | +136 | 36.8% | -1.21 | 0–1 | — | — | +1.51 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1532 | 95.8 | — | — | — | — | — | — | +136 | 39.1% | -1.09 | 0–1 | — | — | +11.83 | Career | 1500 | 98.0 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | +8.00 |
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 |
|---|---|---|---|---|---|
| Michiko Saji | 0 | 1 | 1 | Nov 15, 1980 | H2H |
| Jennifer Goodling | 0 | 1 | 1 | Nov 12, 1980 | H2H |
| Julie Filkoff | 0 | 1 | 1 | Nov 6, 1980 | H2H |
| Renata Tomanova | 0 | 1 | 1 | Oct 23, 1980 | H2H |
| Nerida Gregory | 0 | 1 | 1 | Oct 16, 1980 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Penny Johnson | 0 | 1 | 1 | Oct 26, 1979 | H2H |