Trudy Groenman
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Marijke Jansen | 0 | 4 | 4 | Jul 21, 1973 | H2H |
| Jill Cooper | 1 | 2 | 3 | Apr 3, 1971 | H2H |
| Corinne Molesworth | 0 | 3 | 3 | Mar 20, 1971 | H2H |
| Betty Stove | 1 | 1 | 2 | Jul 2, 1972 | H2H |
| Winnie Shaw | 0 | 2 | 2 | Jun 22, 1972 | H2H |
H2H data updated: 2026-09-13 00:00 UTC
Trudy Groenman vs Ching Ling Chang H2H: 1-0 (incl. walkovers)
Trudy Groenman vs Ching Ling Chang: 0–0 excluding walkovers; 1–0 including 1 walkover. Across 1 main-draw results including walkovers, Trudy Groenman leads 1–0 on hard courts. Most recently, Trudy Groenman won the 1972 South African Open round of 128 W/O.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Trudy Groenman | (w/o) | Ching Ling Chang | Match data | Mar 28, 1972* | R128 | South African Open | 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.
Career Comparison
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trudy Groenman | — | — | — | 1,725 | 41 | 32 | 56.2% | 0 | 0 | 0 | 0 | 1 | 1 |
| Ching Ling Chang | — | — | — | 1,500 | 13 | 41 | 24.1% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Trudy Groenman | Ching Ling Chang | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 23 | — | — | — | — | — | — | — | 1971 | 0–5 | 0.0% | — | 1,467 | 0 | 0 |
| 24 | 1968 | 1–1 | 50.0% | — | 1,512 | 0 | 0 | 1972 | 0–3 | 0.0% | — | 1,442 | 0 | 0 |
| 25 | 1969 | 4–2 | 66.7% | — | 1,572 | 0 | 0 | 1973 | 5–11 | 31.2% | — | 1,445 | 0 | 0 |
| 26 | 1970 | 7–9 | 43.8% | — | 1,577 | 0 | 0 | 1974 | 8–16 | 33.3% | — | 1,466 | 0 | 0 |
| 27 | 1971 | 21–13 | 61.8% | — | 1,674 | 0 | 1 | 1975 | 0–6 | 0.0% | — | 1,411 | 0 | 0 |
| 28 | 1972 | 7–5 | 58.3% | — | 1,706 | 0 | 1 | — | — | — | — | — | — | — |
| 29 | 1973 | 1–2 | 33.3% | — | 1,697 | 0 | 1 | — | — | — | — | — | — | — |
Surface Results by Age
Seasons are aligned by the age each player spent most of that calendar year. 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.
| Age | Trudy Groenman | Ching Ling Chang | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1971 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 0 | 3 | 3 | 0.0% | — | — | — | — |
| 24 | 1968 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 1972 | 0 | 1 | 1 | 0.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 25 | 1969 | — | — | — | — | 4 | 2 | 6 | 66.7% | — | — | — | — | — | — | — | — | 1973 | — | — | — | — | 2 | 6 | 8 | 25.0% | 3 | 4 | 7 | 42.9% | — | — | — | — |
| 26 | 1970 | — | — | — | — | 6 | 5 | 11 | 54.5% | 1 | 4 | 5 | 20.0% | — | — | — | — | 1974 | 3 | 4 | 7 | 42.9% | 4 | 7 | 11 | 36.4% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% |
| 27 | 1971 | — | — | — | — | 12 | 7 | 19 | 63.2% | 8 | 6 | 14 | 57.1% | — | — | — | — | 1975 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 28 | 1972 | 3 | 1 | 4 | 75.0% | 2 | 2 | 4 | 50.0% | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1973 | — | — | — | — | 1 | 1 | 2 | 50.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 3 | 1 | 4 | 75.0% | 26 | 18 | 44 | 59.1% | 11 | 13 | 24 | 45.8% | — | — | — | — | — | 3 | 7 | 10 | 30.0% | 6 | 15 | 21 | 28.6% | 3 | 10 | 13 | 23.1% | 0 | 2 | 2 | 0.0% |
Advanced Statistics Comparison by Age
Seasons are aligned by the age each player spent most of that calendar year. 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.
| Age | Trudy Groenman | Ching Ling Chang | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1971 | 1468 | 98.2 | — | — | — | — | — | — | +43 | 0.0% | -4.00 | — | — | — | -0.06 |
| 24 | 1968 | 1512 | 107.5 | — | — | — | — | — | — | — | 50.0% | +0.75 | — | — | — | -0.28 | 1972 | 1442 | 90.9 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | +0.27 |
| 25 | 1969 | 1573 | 112.4 | — | — | — | — | — | +24 | — | 57.1% | -0.29 | 2–0 | — | — | -0.34 | 1973 | 1445 | 99.8 | — | — | — | — | — | +24 | +44 | 34.3% | -1.09 | 1–2 (33%) | 1–1 | — | +1.08 |
| 26 | 1970 | 1577 | 120.6 | — | — | — | — | — | +55 | -59 | 42.9% | -0.11 | 2–1 (67%) | — | — | -0.17 | 1974 | 1467 | 93.7 | — | — | — | — | +96 | -3 | — | 35.8% | -1.49 | 2–3 (40%) | 3–0 (100%) | 102.1 | +0.93 |
| 27 | 1971 | 1675 | 128.4 | — | — | — | — | — | +26 | -85 | 58.7% | +0.48 | 5–6 (45%) | 2–1 (67%) | — | +1.10 | 1975 | 1412 | 92.1 | — | — | — | — | — | — | — | 7.7% | -3.31 | 0–1 | 1–0 | — | +0.28 |
| 28 | 1972 | 1707 | 122.0 | — | — | — | — | -116 | +2 | -91 | 53.8% | +0.38 | 2–2 (50%) | — | — | -0.56 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1973 | 1698 | 109.8 | — | — | — | — | — | — | — | 37.5% | -0.75 | 1–1 | — | — | -0.20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1726 | 128.7 | — | — | — | — | -116 | +31 | -80 | 53.1% | +0.22 | 12–10 (55%) | 2–1 (67%) | — | -0.64 | — | 1500 | 93.3 | — | — | — | — | +96 | +8 | +44 | 28.3% | -1.86 | 3–6 (33%) | 5–1 (83%) | 101.2 | +4.81 |
Career Rivalries
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
Ching Ling Chang
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Kate Latham | 0 | 2 | 2 | Oct 8, 1975 | H2H |
| Patricia Bostrom | 0 | 2 | 2 | Mar 13, 1975 | H2H |
| Patricia Reese | 0 | 2 | 2 | Jul 12, 1974 | H2H |
| Gwynn Sammel | 2 | 0 | 2 | Apr 18, 1974 | H2H |
| Raquel Giscafre | 0 | 1 | 1 | Oct 15, 1975 | H2H |