H2H data updated: 2026-09-05 00:00 UTC

Haroon Ismail vs Colin Dibley H2H: 1-0

Haroon Ismail holds a 1–0 lead over Colin Dibley in their ATP head-to-head. Across 1 main-draw meeting, Haroon Ismail leads 1–0 on hard courts. Most recently, Haroon Ismail won the 1979 Hong Kong Open round of 32 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.

Haroon Ismail
ZIM Age 71 Right-Handed 178 cm / 5'10"
H2H
1 – 0
1 main-draw meetings
Colin Dibley
AUS Age 81 Right-Handed 188 cm / 6'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Haroon Ismail 7-6 6-1 Colin Dibley Match data Nov 8, 1979* R32 Hong Kong Open ATP 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
Haroon Ismail #1,144 #87 0 1,611 20 46 30.3% 0 0 0 0 0 0
Colin Dibley #240 #33 0 1,877 341 310 52.4% 0 0 0 0 5 5

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 Haroon Ismail Colin Dibley
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
23 1978 0–1 0.0% #130 1,490 0 0 1968 3–2 60.0% — 1,521 0 0
24 1979 4–14 22.2% #197 1,474 0 0 — — — — — — —
25 1980 8–9 47.1% #100 1,543 0 0 1970 7–10 41.2% — 1,526 0 0
26 1981 5–7 41.7% #99 1,589 0 0 1971 41–21 66.1% — 1,753 0 1
27 1982 3–14 17.6% #99 1,492 0 0 1972 52–30 63.4% — 1,819 0 2
28 1983 0–1 0.0% #187 1,482 0 0 1973 35–31 53.0% #39 1,694 0 4
29 — — — — — — — 1974 35–35 50.0% #87 1,692 0 4
30 — — — — — — — 1975 18–28 39.1% #94 1,624 0 4
31 — — — — — — — 1976 39–40 49.4% #85 1,636 0 4
32 — — — — — — — 1977 52–33 61.2% #35 1,780 0 4
33 — — — — — — — 1978 18–28 39.1% #115 1,629 0 4
34 — — — — — — — 1979 20–22 47.6% #116 1,700 0 4
35 — — — — — — — 1980 18–23 43.9% #57 1,651 0 5
36 — — — — — — — 1981 3–7 30.0% #99 1,633 0 5

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 Haroon Ismail Colin Dibley
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 1978 0 1 1 0.0% — — — — — — — — — — — — 1968 — — — — 2 1 3 66.7% 1 1 2 50.0% — — — —
24 1979 3 4 7 42.9% 0 6 6 0.0% 0 3 3 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
25 1980 0 2 2 0.0% 5 4 9 55.6% — — — — 3 3 6 50.0% 1970 0 2 2 0.0% 0 2 2 0.0% 7 6 13 53.8% — — — —
26 1981 0 2 2 0.0% 5 4 9 55.6% 0 1 1 0.0% — — — — 1971 14 9 23 60.9% 8 6 14 57.1% 19 6 25 76.0% — — — —
27 1982 0 3 3 0.0% 3 9 12 25.0% 0 1 1 0.0% 0 1 1 0.0% 1972 9 10 19 47.4% 14 5 19 73.7% 20 9 29 69.0% 9 6 15 60.0%
28 1983 — — — — 0 1 1 0.0% — — — — — — — — 1973 14 9 23 60.9% 7 9 16 43.8% 9 6 15 60.0% 5 7 12 41.7%
29 — — — — — — — — — — — — — — — — — 1974 6 11 17 35.3% 6 7 13 46.2% 17 9 26 65.4% 6 8 14 42.9%
30 — — — — — — — — — — — — — — — — — 1975 2 9 11 18.2% 12 11 23 52.2% 2 4 6 33.3% 2 4 6 33.3%
31 — — — — — — — — — — — — — — — — — 1976 7 7 14 50.0% 12 19 31 38.7% 5 5 10 50.0% 15 9 24 62.5%
32 — — — — — — — — — — — — — — — — — 1977 16 10 26 61.5% 11 9 20 55.0% 15 8 23 65.2% 10 6 16 62.5%
33 — — — — — — — — — — — — — — — — — 1978 5 7 12 41.7% 5 6 11 45.5% 5 6 11 45.5% 3 9 12 25.0%
34 — — — — — — — — — — — — — — — — — 1979 9 7 16 56.3% 2 3 5 40.0% 9 7 16 56.3% 0 5 5 0.0%
35 — — — — — — — — — — — — — — — — — 1980 2 7 9 22.2% 0 2 2 0.0% 10 6 16 62.5% 6 8 14 42.9%
36 — — — — — — — — — — — — — — — — — 1981 2 3 5 40.0% 0 1 1 0.0% 0 1 1 0.0% 1 2 3 33.3%
Career — 3 12 15 20.0% 13 24 37 35.1% 0 5 5 0.0% 4 5 9 44.4% — 86 91 177 48.6% 79 81 160 49.4% 119 74 193 61.7% 57 64 121 47.1%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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 Haroon Ismail Colin Dibley
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 1978 1491 102.0 — — — — — — — 33.3% -0.33 0–1 0–1 — +0.03 1968 1521 100.4 — — — — — +15 — 50.0% +0.07 3–1 (75%) — — -0.01
24 1979 1474 113.3 — — — — +123 -9 +6 27.8% -1.42 1–2 (33%) 1–2 (33%) 98.4 +0.36 — — — — — — — — — — — — — — — —
25 1980 1543 119.3 — — — — +37 +3 — 46.2% -0.44 2–1 (67%) 3–1 (75%) 103.9 +1.91 1970 1527 119.6 — — — — — — +43 41.3% -0.13 1–2 (33%) 2–1 (67%) 100.1 +0.99
26 1981 1589 128.3 — — — — — +28 — 40.0% -0.51 2–1 (67%) 0–2 — -0.08 1971 1753 136.2 — — — — -77 -90 +64 64.2% +0.99 7–6 (54%) 11–7 (61%) 106.7 +3.94
27 1982 1492 109.5 — — — — +19 +46 — 23.1% -2.00 1–2 (33%) 1–1 — -0.39 1972 1820 133.4 — — — — -107 +19 +44 61.8% +0.85 10–11 (48%) 9–12 (43%) 95.0 +4.65
28 1983 1482 97.2 — — — — — — — 0.0% -4.00 — — — +0.04 1973 1694 131.3 — — — — -6 +47 +143 52.4% +0.23 11–11 (50%) 15–16 (48%) 96.7 +1.46
29 — — — — — — — — — — — — — — — — 1974 1692 131.7 — — — — -39 +7 +124 49.4% +0.02 13–12 (52%) 14–11 (56%) 101.3 +2.15
30 — — — — — — — — — — — — — — — — 1975 1624 129.4 — — — — -25 +67 +117 38.1% -0.72 7–2 (78%) 3–9 (25%) 99.6 -1.23
31 — — — — — — — — — — — — — — — — 1976 1637 139.9 — — — — +133 -89 +109 48.1% +0.14 14–12 (54%) 12–17 (41%) 97.7 +4.03
32 — — — — — — — — — — — — — — — — 1977 1780 143.5 — — — — +35 -122 +37 56.9% +0.58 18–9 (67%) 14–13 (52%) 106.4 +0.53
33 — — — — — — — — — — — — — — — — 1978 1630 137.5 — — — — +25 +44 +130 40.0% -0.38 6–8 (43%) 4–15 (21%) 89.4 -1.58
34 — — — — — — — — — — — — — — — — 1979 1700 131.0 — — — — -66 -72 +117 48.6% +0.03 6–7 (46%) 10–12 (45%) 99.9 +1.79
35 — — — — — — — — — — — — — — — — 1980 1651 129.6 — — — — -49 — +147 48.6% -0.15 4–10 (29%) 6–4 (60%) 93.6 +0.75
36 — — — — — — — — — — — — — — — — 1981 1633 118.6 — — — — -7 — — 30.4% -1.13 2–1 (67%) 2–3 (40%) 103.0 -0.30
Career — 1612 120.8 — — — — +70 +22 +6 33.8% -1.12 6–7 (46%) 5–7 (42%) 100.7 +2.88 — 1878 138.6 — — — — -9 -23 +90 51.8% +0.23 102–92 (53%) 102–120 (46%) 97.5 +2.65

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.