H2H data updated: 2026-09-03 00:00 UTC

Haroon Ismail vs Dale Collings H2H: 1-0

Haroon Ismail holds a 1–0 lead over Dale Collings in their ATP head-to-head. Across 1 main-draw meeting, Haroon Ismail leads 1–0 on clay. Most recently, Haroon Ismail won the 1980 Dutch Open round of 16 6-3 6-4.

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Haroon Ismail
ZIM Age 71 Right-Handed 178 cm / 5'10"
H2H
1 – 0
1 main draw meetings
Dale Collings
AUS Age 70 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Haroon Ismail 6-3 6-4 Dale Collings Match data Jul 25, 1980* R16 Dutch Open ATP 250 Clay

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
Dale Collings #258 #101 0 1,575 23 43 34.8% 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 Haroon Ismail Dale Collings
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 — — — — — — — 1974 0–2 0.0% — 1,482 0 0
20 — — — — — — — 1976 1–1 50.0% #248 1,521 0 0
21 — — — — — — — 1977 1–4 20.0% #366 1,508 0 0
22 — — — — — — — 1978 3–5 37.5% #144 1,545 0 0
23 1978 0–1 0.0% #130 1,490 0 0 1979 6–13 31.6% #101 1,530 0 0
24 1979 4–14 22.2% #197 1,474 0 0 1980 6–7 46.2% #211 1,541 0 0
25 1980 8–9 47.1% #100 1,543 0 0 1981 4–7 36.4% — 1,526 0 0
26 1981 5–7 41.7% #99 1,589 0 0 1982 2–4 33.3% — 1,504 0 0
27 1982 3–14 17.6% #99 1,492 0 0 — — — — — — —
28 1983 0–1 0.0% #187 1,482 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 Haroon Ismail Dale Collings
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 %
18 — — — — — — — — — — — — — — — — — 1974 — — — — — — — — 0 2 2 0.0% — — — —
20 — — — — — — — — — — — — — — — — — 1976 — — — — — — — — 1 1 2 50.0% — — — —
21 — — — — — — — — — — — — — — — — — 1977 — — — — — — — — 1 4 5 20.0% — — — —
22 — — — — — — — — — — — — — — — — — 1978 0 1 1 0.0% — — — — 3 4 7 42.9% — — — —
23 1978 0 1 1 0.0% — — — — — — — — — — — — 1979 3 3 6 50.0% 0 3 3 0.0% 3 6 9 33.3% 0 1 1 0.0%
24 1979 3 4 7 42.9% 0 6 6 0.0% 0 3 3 0.0% 1 1 2 50.0% 1980 1 1 2 50.0% 1 2 3 33.3% 4 3 7 57.1% 0 1 1 0.0%
25 1980 0 2 2 0.0% 5 4 9 55.6% — — — — 3 3 6 50.0% 1981 — — — — 1 1 2 50.0% 3 5 8 37.5% 0 1 1 0.0%
26 1981 0 2 2 0.0% 5 4 9 55.6% 0 1 1 0.0% — — — — 1982 — — — — — — — — 2 3 5 40.0% 0 1 1 0.0%
27 1982 0 3 3 0.0% 3 9 12 25.0% 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
28 1983 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 3 12 15 20.0% 13 24 37 35.1% 0 5 5 0.0% 4 5 9 44.4% — 4 5 9 44.4% 2 6 8 25.0% 17 28 45 37.8% 0 4 4 0.0%

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 Dale Collings
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
18 — — — — — — — — — — — — — — — — 1974 1482 101.6 — — — — — — — 0.0% -4.00 — — — -0.22
20 — — — — — — — — — — — — — — — — 1976 1522 102.9 — — — — — — — 40.0% -0.40 0–1 — — -0.33
21 — — — — — — — — — — — — — — — — 1977 1508 116.0 — — — — — — -2 18.2% -1.82 — 2–2 (50%) — -0.07
22 — — — — — — — — — — — — — — — — 1978 1546 111.7 — — — — — — +34 41.7% -0.96 0–1 1–0 — +0.58
23 1978 1491 102.0 — — — — — — — 33.3% -0.33 0–1 0–1 — +0.03 1979 1531 112.7 — — — — +45 -49 -1 27.9% -1.16 3–1 (75%) 3–5 (38%) — +0.57
24 1979 1474 113.3 — — — — +123 -9 +6 27.8% -1.42 1–2 (33%) 1–2 (33%) — +0.36 1980 1542 104.2 — — — — +13 -65 +53 48.3% -0.52 1–2 (33%) 3–0 (100%) — +2.06
25 1980 1543 119.3 — — — — +37 +3 — 46.2% -0.44 2–1 (67%) 3–1 (75%) — +1.91 1981 1527 107.7 — — — — — — +30 39.3% -0.68 1–2 (33%) 4–4 (50%) — +0.56
26 1981 1589 128.3 — — — — — +28 — 40.0% -0.51 2–1 (67%) 0–2 — -0.08 1982 1505 97.1 — — — — — — +16 40.0% -0.67 — 2–2 (50%) — +1.10
27 1982 1492 109.5 — — — — +19 +46 — 23.1% -2.00 1–2 (33%) 1–1 — -0.39 — — — — — — — — — — — — — — — —
28 1983 1482 97.2 — — — — — — — 0.0% -4.00 — — — +0.04 — — — — — — — — — — — — — — — —
Career — 1612 120.8 — — — — +70 +22 +6 33.8% -1.12 6–7 (46%) 5–7 (42%) 100.7 +2.88 — 1575 112.7 — — — — +35 -57 +22 35.8% -0.98 5–7 (42%) 15–13 (54%) 100.9 +6.44

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.