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

Stefan Simonsson vs Trevor Allan H2H: 1-1

Stefan Simonsson and Trevor Allan are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, they are tied 1–1 on clay. Most recently, Stefan Simonsson won the 1984 Italian Open round of 64 6-0 6-4.

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Stefan Simonsson
SWE Age 66 Right-Handed 175 cm / 5'9"
H2H
1 – 1
2 main draw meetings
Trevor Allan
AUS Age 71 Left-Handed 178 cm / 5'10"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Stefan Simonsson #68 6-0 6-4 Trevor Allan #91 Match data May 15, 1984* R64 Italian Open ATP 500 Clay
Trevor Allan 6-4 6-2 6-0 Stefan Simonsson #48 Match data May 25, 1983* R128 Roland Garros Grand Slam 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
Stefan Simonsson #702 #48 0 1,788 98 121 44.7% 0 0 0 0 0 0
Trevor Allan #407 #57 0 1,693 24 35 40.7% 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 Stefan Simonsson Trevor Allan
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 1977 0–2 0.0% — 1,484 0 0 — — — — — — —
18 1978 1–1 50.0% #340 1,502 0 0 1974 1–2 33.3% #318 1,483 0 0
19 1979 8–8 50.0% #137 1,573 0 0 — — — — — — —
20 1980 12–19 38.7% #142 1,544 0 0 — — — — — — —
21 1981 5–10 33.3% — 1,526 0 0 — — — — — — —
22 1982 21–20 51.2% #94 1,704 0 0 — — — — — — —
23 1983 24–19 55.8% #61 1,675 0 0 — — — — — — —
24 1984 17–22 43.6% #119 1,676 0 0 — — — — — — —
25 1985 10–16 38.5% #162 1,620 0 0 1981 1–1 50.0% — 1,491 0 0
26 1986 0–4 0.0% #354 1,546 0 0 1982 1–2 33.3% — 1,503 0 0
27 — — — — — — — 1983 5–3 62.5% #358 1,587 0 0
28 — — — — — — — 1984 12–10 54.5% #69 1,665 0 0
29 — — — — — — — 1985 4–15 21.1% #198 1,547 0 0
30 — — — — — — — 1986 0–2 0.0% #363 1,522 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 Stefan Simonsson Trevor Allan
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 %
17 1977 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
18 1978 1 1 2 50.0% — — — — — — — — — — — — 1974 — — — — — — — — 1 2 3 33.3% — — — —
19 1979 3 2 5 60.0% 3 5 8 37.5% — — — — 2 1 3 66.7% — — — — — — — — — — — — — — — — —
20 1980 1 3 4 25.0% 10 12 22 45.5% 0 1 1 0.0% 1 3 4 25.0% — — — — — — — — — — — — — — — — —
21 1981 1 2 3 33.3% 4 7 11 36.4% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
22 1982 6 5 11 54.5% 13 13 26 50.0% 2 1 3 66.7% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
23 1983 8 8 16 50.0% 14 8 22 63.6% 1 1 2 50.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
24 1984 2 6 8 25.0% 9 11 20 45.0% 5 3 8 62.5% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
25 1985 1 3 4 25.0% 9 12 21 42.9% 0 1 1 0.0% — — — — 1981 — — — — 1 1 2 50.0% — — — — — — — —
26 1986 — — — — 0 2 2 0.0% 0 1 1 0.0% 0 1 1 0.0% 1982 — — — — 1 2 3 33.3% — — — — — — — —
27 — — — — — — — — — — — — — — — — — 1983 — — — — 5 3 8 62.5% — — — — — — — —
28 — — — — — — — — — — — — — — — — — 1984 — — — — 12 10 22 54.5% — — — — — — — —
29 — — — — — — — — — — — — — — — — — 1985 — — — — 4 12 16 25.0% 0 1 1 0.0% 0 2 2 0.0%
30 — — — — — — — — — — — — — — — — — 1986 — — — — 0 1 1 0.0% — — — — 0 1 1 0.0%
Career — 23 31 54 42.6% 62 71 133 46.6% 8 8 16 50.0% 5 11 16 31.2% — — — — — 23 29 52 44.2% 1 3 4 25.0% 0 3 3 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 Stefan Simonsson Trevor Allan
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
17 1977 1485 101.7 — — — — — — — 20.0% -3.00 0–1 — — -0.03 — — — — — — — — — — — — — — — —
18 1978 1503 109.9 — — — — — — — 50.0% 0.00 — — — -0.02 1974 1484 97.8 — — — — — — +26 33.3% -1.50 — — — +0.51
19 1979 1573 120.2 — — — — +59 -53 — 54.1% -0.03 1–4 (20%) 6–1 (86%) — +1.36 — — — — — — — — — — — — — — — —
20 1980 1544 125.2 — — — — +24 +16 — 39.5% -0.49 6–6 (50%) 2–2 (50%) — +1.54 — — — — — — — — — — — — — — — —
21 1981 1526 115.7 — — — — +17 +34 — 37.1% -0.63 2–5 (29%) 0–2 — +0.91 — — — — — — — — — — — — — — — —
22 1982 1704 136.7 — — — — -82 -48 -110 50.0% -0.02 4–6 (40%) 6–6 (50%) — -0.71 — — — — — — — — — — — — — — — —
23 1983 1675 131.1 — — — — -53 +65 — 52.4% -0.06 8–5 (62%) 7–4 (64%) — +1.84 — — — — — — — — — — — — — — — —
24 1984 1676 134.5 — — — — -75 -4 +37 47.2% -0.28 5–11 (31%) 8–3 (73%) — +0.29 — — — — — — — — — — — — — — — —
25 1985 1620 130.1 — — — — -54 +24 — 42.6% -0.44 3–6 (33%) 3–5 (38%) — -1.32 1981 1491 102.4 — — — — — — — 50.0% +0.25 — 0–1 — +0.27
26 1986 1546 94.2 — — — — — — — 20.0% -2.30 0–2 — — +0.69 1982 1504 109.4 — — — — — +37 — 28.6% -2.00 1–0 — — -0.20
27 — — — — — — — — — — — — — — — — 1983 1587 121.9 — — — — — +29 — 57.9% +0.79 1–0 — — +0.34
28 — — — — — — — — — — — — — — — — 1984 1665 137.3 — — — — — +33 — 47.9% +0.35 5–1 (83%) 0–1 — 0.00
29 — — — — — — — — — — — — — — — — 1985 1548 118.7 — — — — — +18 — 31.3% -1.12 1–6 (14%) 2–4 (33%) — -0.07
30 — — — — — — — — — — — — — — — — 1986 1522 98.9 — — — — — — — 0.0% -3.50 — — — +0.18
Career — 1789 134.5 — — — — -35 +7 -3 46.2% -0.31 29–46 (39%) 32–23 (58%) 102.1 +2.08 — 1693 128.3 — — — — — +28 +26 40.4% -0.43 8–7 (53%) 2–6 (25%) 100.6 +1.75

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.