Diane Morrison
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Wendy Turnbull | 0 | 3 | 3 | Dec 11, 1980 | H2H |
| Hana Mandlikova | 0 | 3 | 3 | Dec 5, 1980 | H2H |
| Sherry Acker | 0 | 2 | 2 | Sep 4, 1981 | H2H |
| Roberta Mccallum | 1 | 1 | 2 | Jun 10, 1981 | H2H |
| Laura Arraya | 0 | 2 | 2 | Apr 18, 1981 | H2H |
H2H data updated: 2026-09-12 00:00 UTC
Diane Morrison vs Roberta Mccallum H2H: 1-1
Diane Morrison and Roberta Mccallum are tied 1–1 in their WTA head-to-head. Across 2 main-draw meetings, Diane Morrison leads 1–0 on grass, while Roberta Mccallum leads 1–0 on hard courts. Most recently, Diane Morrison won the 1981 Surbiton round of 64 7-6 6-1.
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 |
|---|---|---|---|---|---|---|---|---|
| Diane Morrison | 7-6 6-1 | Roberta Mccallum | Match data | Jun 10, 1981* | R64 | Surbiton | WTA 250 | Grass |
| Roberta Mccallum | 6-3 6-1 | Diane Morrison | Match data | Aug 12, 1980* | R64 | Canadian Open | WTA 500 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diane Morrison | — | — | — | 1,694 | 41 | 43 | 48.8% | 0 | 0 | 0 | 0 | 1 | 1 |
| Roberta Mccallum | — | — | — | 1,660 | 24 | 43 | 35.8% | 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 | Diane Morrison | Roberta Mccallum | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 14 | 1973 | 2–1 | 66.7% | — | 1,520 | 0 | 0 | — | — | — | — | — | — | — |
| 15 | 1974 | 0–1 | 0.0% | — | 1,504 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1977 | 1–1 | 50.0% | — | 1,507 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | 1978 | 0–1 | 0.0% | — | 1,484 | 0 | 0 |
| 20 | 1979 | 17–11 | 60.7% | — | 1,675 | 0 | 1 | 1979 | 6–5 | 54.5% | — | 1,573 | 0 | 0 |
| 21 | 1980 | 9–22 | 29.0% | — | 1,593 | 0 | 1 | 1980 | 14–27 | 34.1% | — | 1,582 | 0 | 0 |
| 22 | 1981 | 12–7 | 63.2% | — | 1,636 | 0 | 1 | 1981 | 4–9 | 30.8% | — | 1,568 | 0 | 0 |
| 23 | — | — | — | — | — | — | — | 1982 | 0–1 | 0.0% | — | 1,549 | 0 | 0 |
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 | Diane Morrison | Roberta Mccallum | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 14 | 1973 | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 15 | 1974 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1979 | 2 | 2 | 4 | 50.0% | 6 | 1 | 7 | 85.7% | 6 | 6 | 12 | 50.0% | 1 | 1 | 2 | 50.0% | 1979 | — | — | — | — | — | — | — | — | 3 | 4 | 7 | 42.9% | — | — | — | — |
| 21 | 1980 | 1 | 8 | 9 | 11.1% | 0 | 2 | 2 | 0.0% | 7 | 6 | 13 | 53.8% | 1 | 6 | 7 | 14.3% | 1980 | 3 | 4 | 7 | 42.9% | 0 | 3 | 3 | 0.0% | 1 | 4 | 5 | 20.0% | 10 | 16 | 26 | 38.5% |
| 22 | 1981 | 1 | 1 | 2 | 50.0% | — | — | — | — | 1 | 2 | 3 | 33.3% | — | — | — | — | 1981 | 2 | 4 | 6 | 33.3% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 2 | 3 | 5 | 40.0% |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1982 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 6 | 13 | 19 | 31.6% | 6 | 3 | 9 | 66.7% | 14 | 14 | 28 | 50.0% | 2 | 7 | 9 | 22.2% | — | 5 | 9 | 14 | 35.7% | 0 | 4 | 4 | 0.0% | 4 | 9 | 13 | 30.8% | 12 | 19 | 31 | 38.7% |
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 | Diane Morrison | Roberta Mccallum | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 14 | 1973 | 1521 | 107.5 | — | — | — | — | +81 | — | — | 57.1% | +1.28 | 1–0 | 0–1 | — | +0.85 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 15 | 1974 | 1504 | 99.5 | — | — | — | — | — | — | — | 33.3% | -1.00 | 0–1 | — | — | +0.26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1977 | 1508 | 111.9 | — | — | — | — | — | — | — | 60.0% | +1.60 | 0–1 | — | — | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1978 | 1484 | 96.8 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | 0–1 | — | +0.04 |
| 20 | 1979 | 1676 | 136.8 | — | — | — | — | -18 | -22 | -41 | 59.0% | +1.03 | 3–2 (60%) | 0–2 | — | +1.94 | 1979 | 1573 | 116.3 | — | — | — | — | — | — | +15 | 50.0% | -0.46 | 1–3 (25%) | 1–0 | — | -0.41 |
| 21 | 1980 | 1594 | 117.4 | — | — | — | — | -123 | — | +90 | 31.9% | -1.27 | 3–4 (43%) | 3–4 (43%) | 96.1 | -0.03 | 1980 | 1582 | 127.2 | — | — | — | — | +6 | -80 | -45 | 35.9% | -1.14 | 5–5 (50%) | 1–2 (33%) | 99.9 | +1.55 |
| 22 | 1981 | 1636 | 124.3 | — | — | — | — | — | — | +32 | 61.5% | +0.95 | 2–2 (50%) | 2–0 | — | -0.38 | 1981 | 1568 | 107.3 | — | — | — | — | +56 | — | — | 33.3% | -1.81 | 0–1 | 2–1 (67%) | — | +0.48 |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1982 | 1549 | 95.7 | — | — | — | — | — | — | — | 0.0% | -4.00 | — | — | — | +0.17 |
| Career | — | 1694 | 129.4 | — | — | — | — | -73 | -22 | +28 | 48.9% | +0.14 | 9–10 (47%) | 5–7 (42%) | 96.9 | +3.23 | — | 1661 | 121.1 | — | — | — | — | +19 | -80 | -10 | 36.6% | -1.23 | 6–9 (40%) | 4–4 (50%) | 98.5 | +2.73 |
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.
Roberta Mccallum
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Pam Shriver | 1 | 2 | 3 | Mar 13, 1981 | H2H |
| Hana Mandlikova | 0 | 3 | 3 | Oct 23, 1980 | H2H |
| Billie Jean King | 0 | 3 | 3 | Oct 4, 1980 | H2H |
| Lele Forood | 2 | 1 | 3 | Oct 2, 1980 | H2H |
| Dianne Fromholtz | 0 | 3 | 3 | Sep 25, 1980 | H2H |