H2H data updated: 2026-09-06 00:00 UTC

Jan Siemerink vs Wally Masur H2H: 1-1

Jan Siemerink and Wally Masur are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, they are tied 1–1 on hard courts. Most recently, Jan Siemerink won the 1995 Hong Kong Open round of 32 6-4 6-4.

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Jan Siemerink
NED Age 56 Left-Handed 183 cm / 6'0"
H2H
1 – 1
2 main-draw meetings
Wally Masur
AUS Age 63 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Jan Siemerink #51 6-4 6-4 Wally Masur #125 Match data Apr 20, 1995* R32 Hong Kong Open ATP World Series → modern equivalent ATP 250 Hard
Wally Masur #26 6-7(4) 6-4 6-2 Jan Siemerink #48 Match data Apr 9, 1993* R16 Japan Open ATP Championship Series → modern equivalent ATP 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
Jan Siemerink #987 #14 1,863 1,902 261 262 49.9% 0 0 0 0 4 4
Wally Masur #1,268 #15 1,417 1,894 313 268 53.9% 0 0 0 0 3 3

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 Jan Siemerink Wally Masur
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1980 1–1 50.0% #423 1,498 0 0
18 — — — — — — — 1981 3–4 42.9% — 1,510 0 0
19 — — — — — — — 1982 6–8 42.9% — 1,582 0 0
20 1990 5–4 55.6% #135 1,541 0 0 1983 19–17 52.8% #67 1,737 0 1
21 1991 30–21 58.8% #26 1,756 0 1 1984 18–23 43.9% #109 1,690 0 1
22 1992 22–27 44.9% #57 1,741 0 1 1985 21–21 50.0% #100 1,720 0 1
23 1993 24–25 49.0% #53 1,669 0 1 1986 17–16 51.5% #87 1,689 0 1
24 1994 16–19 45.7% #81 1,686 0 1 1987 33–19 63.5% #35 1,718 0 2
25 1995 37–29 56.1% #21 1,768 0 1 1988 26–16 61.9% #46 1,769 0 3
26 1996 35–28 55.6% #15 1,861 0 2 1989 31–21 59.6% #42 1,816 0 3
27 1997 18–27 40.0% #78 1,738 0 2 1990 24–22 52.2% #53 1,726 0 3
28 1998 38–24 61.3% #19 1,809 0 4 1991 26–24 52.0% #56 1,722 0 3
29 1999 17–25 40.5% #88 1,653 0 4 1992 38–28 57.6% #38 1,787 0 3
30 2000 7–14 33.3% #104 1,573 0 4 1993 35–22 61.4% #21 1,789 0 3
31 2001 12–17 41.4% #127 1,563 0 4 1994 12–17 41.4% #137 1,660 0 3
32 2002 0–2 0.0% #438 1,531 0 4 1995 3–9 25.0% #271 1,567 0 3

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 Jan Siemerink Wally Masur
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 — — — — — — — — — — — — — — — — — 1980 — — — — — — — — 1 1 2 50.0% — — — —
18 — — — — — — — — — — — — — — — — — 1981 — — — — — — — — 2 3 5 40.0% 1 1 2 50.0%
19 — — — — — — — — — — — — — — — — — 1982 0 2 2 0.0% 0 2 2 0.0% 6 3 9 66.7% 0 1 1 0.0%
20 1990 3 2 5 60.0% — — — — 1 1 2 50.0% 1 1 2 50.0% 1983 7 3 10 70.0% 2 6 8 25.0% 8 6 14 57.1% 2 2 4 50.0%
21 1991 16 7 23 69.6% 0 4 4 0.0% 1 3 4 25.0% 13 7 20 65.0% 1984 3 7 10 30.0% 2 4 6 33.3% 6 7 13 46.2% 7 5 12 58.3%
22 1992 10 12 22 45.5% 2 6 8 25.0% 1 2 3 33.3% 9 7 16 56.3% 1985 6 7 13 46.2% 0 6 6 0.0% 12 6 18 66.7% 3 2 5 60.0%
23 1993 11 13 24 45.8% 4 4 8 50.0% 1 3 4 25.0% 8 5 13 61.5% 1986 14 10 24 58.3% 0 3 3 0.0% 3 3 6 50.0% — — — —
24 1994 9 11 20 45.0% 1 2 3 33.3% — — — — 6 6 12 50.0% 1987 10 10 20 50.0% 0 1 1 0.0% 19 5 24 79.2% 4 3 7 57.1%
25 1995 20 12 32 62.5% 7 6 13 53.8% 3 3 6 50.0% 7 8 15 46.7% 1988 11 8 19 57.9% 4 2 6 66.7% 9 3 12 75.0% 2 3 5 40.0%
26 1996 14 14 28 50.0% 2 4 6 33.3% 7 2 9 77.8% 12 8 20 60.0% 1989 20 13 33 60.6% — — — — 4 3 7 57.1% 7 5 12 58.3%
27 1997 10 12 22 45.5% 4 5 9 44.4% 1 3 4 25.0% 3 7 10 30.0% 1990 17 11 28 60.7% 4 3 7 57.1% 1 2 3 33.3% 2 6 8 25.0%
28 1998 18 11 29 62.1% 0 4 4 0.0% 8 3 11 72.7% 12 6 18 66.7% 1991 13 12 25 52.0% 3 3 6 50.0% 3 3 6 50.0% 7 6 13 53.8%
29 1999 10 12 22 45.5% 1 4 5 20.0% 2 3 5 40.0% 4 6 10 40.0% 1992 22 15 37 59.5% 2 3 5 40.0% 8 3 11 72.7% 6 7 13 46.2%
30 2000 2 8 10 20.0% 4 3 7 57.1% 1 3 4 25.0% — — — — 1993 12 10 22 54.5% 6 4 10 60.0% 11 3 14 78.6% 6 5 11 54.5%
31 2001 6 6 12 50.0% 4 7 11 36.4% 2 4 6 33.3% — — — — 1994 3 8 11 27.3% 0 2 2 0.0% 6 3 9 66.7% 3 4 7 42.9%
32 2002 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 1995 3 6 9 33.3% — — — — 0 3 3 0.0% — — — —
Career — 129 121 250 51.6% 29 50 79 36.7% 28 30 58 48.3% 75 61 136 55.1% — 141 122 263 53.6% 23 39 62 37.1% 99 57 156 63.5% 50 50 100 50.0%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 448/514 of Jan Siemerink's and 182/214 of Wally Masur's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.

Age Jan Siemerink Wally Masur
Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts% Yr Sample Aces/M DFs/M 1st Sv% 1st Pts% 2nd Pts% BP Saved% BP Conv% Svc Pts% Ret Pts%
21 1991 48/51 7.0 5.1 52.3% 75.3% 53.3% 58.8% 44.6% 64.8% 37.8% — —/— — — — — — — — — —
22 1992 42/49 6.2 4.2 54.6% 72.8% 50.4% 63.1% 36.0% 62.7% 34.7% — —/— — — — — — — — — —
23 1993 41/49 6.4 4.0 56.6% 76.6% 50.8% 62.6% 44.2% 65.2% 35.5% — —/— — — — — — — — — —
24 1994 34/35 6.1 4.0 60.1% 75.5% 50.2% 63.0% 40.6% 65.5% 36.4% — —/— — — — — — — — — —
25 1995 61/66 5.4 3.4 59.5% 73.7% 53.2% 64.8% 37.0% 65.3% 35.9% — —/— — — — — — — — — —
26 1996 61/63 6.5 5.1 55.7% 75.7% 51.2% 65.5% 39.7% 64.8% 35.9% — —/— — — — — — — — — —
27 1997 38/45 7.7 5.0 56.5% 74.2% 52.0% 66.9% 45.4% 64.4% 35.1% — —/— — — — — — — — — —
28 1998 48/62 8.3 4.6 58.0% 77.7% 52.2% 65.2% 43.2% 66.9% 34.3% 1991 38/50 4.6 2.4 70.1% 70.0% 53.8% 59.1% 45.5% 64.9% 39.0%
29 1999 30/42 5.9 5.1 55.5% 73.7% 50.1% 56.9% 38.4% 63.1% 32.6% 1992 60/66 5.8 2.2 64.5% 72.2% 54.3% 59.3% 38.8% 65.8% 36.9%
30 2000 17/21 6.5 5.8 54.9% 73.6% 46.0% 64.2% 28.0% 61.4% 33.6% 1993 46/57 4.5 2.1 65.5% 69.9% 52.9% 58.5% 41.5% 64.0% 37.1%
31 2001 26/29 7.2 5.9 52.8% 75.6% 48.7% 56.6% 34.2% 62.7% 32.1% 1994 28/29 4.1 1.6 66.5% 69.7% 54.9% 49.4% 40.7% 64.6% 33.7%
32 2002 2/2 7.0 6.0 54.2% 76.2% 50.9% 42.9% 50.0% 64.8% 27.2% 1995 10/12 5.1 3.4 62.0% 68.6% 49.8% 50.0% 23.5% 60.9% 30.5%
Career — 448/523 6.6 4.6 56.3% 75.1% 51.3% 62.8% 40.0% 64.6% 35.2% — 182/581 4.9 2.2 66.1% 70.6% 53.7% 57.0% 40.3% 64.7% 36.6%

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 Jan Siemerink Wally Masur
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 — — — — — — — — — — — — — — — — 1980 1499 94.9 — — — — — — — 40.0% -1.20 1–0 1–0 — +0.42
18 — — — — — — — — — — — — — — — — 1981 1511 106.6 — — — — — — +25 45.5% -0.41 3–3 (50%) 3–1 (75%) — +0.47
19 — — — — — — — — — — — — — — — — 1982 1582 119.9 — — — — -44 — +50 45.9% -0.49 2–3 (40%) 4–2 (67%) 101.6 +0.13
20 1990 1541 108.1 — — — — +36 — — 52.6% -0.05 1–0 — — +1.03 1983 1738 128.0 — — — — -86 -242 +12 50.0% -0.07 8–6 (57%) 12–6 (67%) 106.5 +1.67
21 1991 1757 143.1 +3.22 -0.58 1.074 51.5% +40 -248 -209 55.7% +0.44 11–10 (52%) 14–13 (52%) 103.1 -0.39 1984 1690 136.0 — — — — +5 -171 +31 45.1% -0.39 5–7 (42%) 6–3 (67%) 102.0 -0.18
22 1992 1741 139.7 +1.78 -2.28 0.929 49.2% +31 -264 -201 43.8% -0.47 7–7 (50%) 10–6 (63%) 101.1 -2.48 1985 1721 125.2 — — — — -58 -281 +80 50.9% +0.11 8–9 (47%) 11–13 (46%) 96.4 +1.83
23 1993 1669 136.6 +2.63 -1.58 1.020 50.4% +20 -120 -143 50.0% +0.11 8–11 (42%) 13–14 (48%) 93.9 +0.60 1986 1690 135.7 — — — — +6 -254 +91 53.1% +0.46 2–4 (33%) 4–7 (36%) 95.9 +1.40
24 1994 1686 139.2 +3.09 -0.26 1.054 50.9% -6 -131 — 48.8% +0.01 3–7 (30%) 8–8 (50%) 97.2 -1.29 1987 1718 136.8 — — — — -62 — +198 59.4% +0.76 9–8 (53%) 12–14 (46%) 96.3 +1.86
25 1995 1768 149.5 +3.33 -1.32 1.035 50.6% -12 -116 -191 54.4% +0.22 11–8 (58%) 12–7 (63%) 111.6 -2.79 1988 1769 141.5 — — — — -99 -245 +181 58.5% +0.78 5–4 (56%) 9–5 (64%) 104.2 +1.13
26 1996 1862 148.8 +2.53 -0.73 1.019 50.6% -13 -212 -147 54.0% +0.10 11–10 (52%) 30–16 (65%) 109.9 -1.35 1989 1816 142.3 — — — — +2 — +56 56.1% +0.52 11–4 (73%) 12–16 (43%) 103.7 -1.04
27 1997 1739 137.7 +1.77 -1.30 0.987 50.2% +24 -75 -78 43.8% -0.28 7–12 (37%) 12–13 (48%) 97.6 -0.14 1990 1726 145.9 — — — — -3 -104 +142 53.7% +0.35 9–12 (43%) 13–13 (50%) 96.2 -1.11
28 1998 1810 145.1 +3.80 -2.09 1.038 50.9% +13 -234 -13 57.3% +0.46 15–7 (68%) 14–16 (47%) 103.5 -0.24 1991 1723 144.4 +3.43 +0.92 1.112 51.7% -11 -52 +118 52.6% +0.36 9–13 (41%) 12–17 (41%) 92.4 -1.05
29 1999 1654 132.5 +1.25 -2.98 0.884 48.1% +56 -141 +72 42.6% -0.49 6–7 (46%) 7–9 (44%) 96.5 +0.21 1992 1787 150.6 +3.70 -0.06 1.081 51.3% -14 -121 +118 55.4% +0.51 17–11 (61%) 14–16 (47%) 104.9 -2.65
30 2000 1573 115.4 -0.13 -3.10 0.870 47.9% +66 -41 +96 37.0% -0.83 3–5 (38%) 4–2 (67%) 98.7 +0.50 1993 1790 139.6 +2.25 -0.44 1.031 50.7% -27 -131 +149 57.9% +0.31 12–9 (57%) 18–10 (64%) 104.8 +0.68
31 2001 1564 122.8 +0.45 -4.28 0.859 47.7% +102 -52 +33 38.7% -0.73 6–4 (60%) 6–11 (35%) 101.1 -0.11 1994 1660 131.4 +1.57 -2.75 0.951 49.0% -16 — +274 42.9% -0.29 1–4 (20%) 2–9 (18%) 89.1 -0.48
32 2002 1531 102.5 -1.57 -0.36 0.773 46.8% — — — 20.0% -1.20 0–1 1–3 (25%) — -0.01 1995 1567 111.6 -0.92 -3.33 0.781 46.0% +46 — +216 32.3% -1.07 1–2 (33%) 4–2 (67%) 98.7 +0.15
Career — 1902 144.8 +2.44 -1.62 0.993 50.1% +20 -133 -71 49.5% -0.03 89–89 (50%) 131–118 (53%) 104.4 -1.24 — 1895 144.1 +2.70 -0.54 1.036 50.6% -22 -173 +117 53.0% +0.27 103–99 (51%) 137–134 (51%) 99.3 +0.56

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.