H2H data updated: 2026-09-01 00:00 UTC

Cecil Mamiit vs Justin Gimelstob H2H: 1-2

Justin Gimelstob holds a 2–1 lead over Cecil Mamiit in their ATP head-to-head. Across 3 main-draw meetings, they are tied 1–1 on hard courts, while Justin Gimelstob leads 1–0 on grass. Most recently, Cecil Mamiit won the 2001 Washington Open round of 64 6-3 6-2.

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Cecil Mamiit
PHI Age 50 Right-Handed 173 cm / 5'8"
H2H
1 – 2
3 main draw meetings
Justin Gimelstob
USA Age 49 Right-Handed 196 cm / 6'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Cecil Mamiit #111 6-3 6-2 Justin Gimelstob #172 Match data Aug 15, 2001* R64 Washington Open ATP International Series Gold → modern equivalent ATP 500 Hard
Justin Gimelstob #106 6-1 7-6(5) Cecil Mamiit #108 Match data Jun 13, 2001* R64 Queen's Club Championships ATP International Series → modern equivalent ATP 250 Grass
Justin Gimelstob #96 1-6 7-6(3) 6-4 Cecil Mamiit #129 Match data Mar 3, 2000* R16 Delray Beach Open ATP International Series → modern equivalent 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
Cecil Mamiit #1,573 #72 625 1,631 48 95 33.6% 0 0 0 0 0 0
Justin Gimelstob #841 #63 733 1,722 107 171 38.5% 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 Cecil Mamiit Justin Gimelstob
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 — — — — — — — 1995 1–1 50.0% — 1,529 0 0
19 — — — — — — — 1996 3–9 25.0% #152 1,510 0 0
20 1996 0–4 0.0% #200 1,471 0 0 1997 17–23 42.5% #104 1,630 0 0
21 1997 2–7 22.2% #229 1,441 0 0 1998 14–15 48.3% #80 1,661 0 0
22 1998 0–1 0.0% #130 1,432 0 0 1999 17–26 39.5% #82 1,645 0 0
23 1999 16–18 47.1% #93 1,552 0 0 2000 14–16 46.7% #97 1,675 0 0
24 2000 6–12 33.3% #121 1,537 0 0 2001 3–12 20.0% #177 1,595 0 0
25 2001 10–18 35.7% #111 1,555 0 0 2002 5–6 45.5% #106 1,619 0 0
26 2002 8–14 36.4% #111 1,555 0 0 2003 9–17 34.6% #106 1,532 0 0
27 2003 3–15 16.7% #183 1,433 0 0 2004 1–5 16.7% #162 1,507 0 0
28 2004 1–3 25.0% #226 1,492 0 0 2005 8–9 47.1% #104 1,595 0 0
29 2005 1–2 33.3% #209 1,469 0 0 2006 14–20 41.2% #86 1,606 0 0
30 — — — — — — — 2007 1–12 7.7% #556 1,537 0 0
32 2008 1–1 50.0% #462 1,468 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 Cecil Mamiit Justin Gimelstob
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 — — — — — — — — — — — — — — — — — 1995 1 1 2 50.0% — — — — — — — — — — — —
19 — — — — — — — — — — — — — — — — — 1996 3 7 10 30.0% — — — — 0 2 2 0.0% — — — —
20 1996 0 4 4 0.0% — — — — — — — — — — — — 1997 15 16 31 48.4% — — — — 1 4 5 20.0% 1 3 4 25.0%
21 1997 2 6 8 25.0% — — — — 0 1 1 0.0% — — — — 1998 5 7 12 41.7% 4 2 6 66.7% 3 4 7 42.9% 2 2 4 50.0%
22 1998 0 1 1 0.0% — — — — — — — — — — — — 1999 13 16 29 44.8% 2 5 7 28.6% 1 4 5 20.0% 1 1 2 50.0%
23 1999 13 12 25 52.0% 2 3 5 40.0% 1 3 4 25.0% — — — — 2000 10 9 19 52.6% 0 3 3 0.0% 4 4 8 50.0% — — — —
24 2000 6 11 17 35.3% 0 1 1 0.0% — — — — — — — — 2001 2 10 12 16.7% — — — — 1 2 3 33.3% — — — —
25 2001 8 14 22 36.4% 1 1 2 50.0% 1 3 4 25.0% — — — — 2002 3 5 8 37.5% — — — — 2 1 3 66.7% — — — —
26 2002 6 9 15 40.0% 1 1 2 50.0% 1 4 5 20.0% — — — — 2003 5 11 16 31.3% 0 2 2 0.0% 4 4 8 50.0% — — — —
27 2003 2 9 11 18.2% 0 4 4 0.0% 1 2 3 33.3% — — — — 2004 1 4 5 20.0% — — — — 0 1 1 0.0% — — — —
28 2004 1 3 4 25.0% — — — — — — — — — — — — 2005 6 8 14 42.9% — — — — 2 1 3 66.7% — — — —
29 2005 0 1 1 0.0% — — — — — — — — 1 1 2 50.0% 2006 6 13 19 31.6% 2 3 5 40.0% 6 4 10 60.0% — — — —
30 — — — — — — — — — — — — — — — — — 2007 1 5 6 16.7% 0 2 2 0.0% 0 4 4 0.0% 0 1 1 0.0%
32 2008 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 39 71 110 35.5% 4 10 14 28.6% 4 13 17 23.5% 1 1 2 50.0% — 71 112 183 38.8% 8 17 25 32.0% 24 35 59 40.7% 4 7 11 36.4%

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 128/143 of Cecil Mamiit's and 259/278 of Justin Gimelstob'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 Cecil Mamiit Justin Gimelstob
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%
18 — —/— — — — — — — — — — 1995 2/2 8.0 5.0 62.7% 69.5% 44.6% 68.1% 31.7% 59.4% 30.5%
19 — —/— — — — — — — — — — 1996 10/12 5.1 3.4 54.9% 73.3% 46.5% 41.8% 50.8% 61.4% 35.3%
20 1996 3/4 2.7 5.3 45.4% 60.2% 51.2% 50.2% 42.9% 55.3% 33.2% 1997 36/40 6.0 5.8 58.7% 71.8% 44.8% 51.3% 37.8% 60.5% 35.9%
21 1997 8/9 4.4 2.0 59.6% 67.9% 47.4% 49.8% 55.1% 59.7% 35.8% 1998 26/29 5.5 3.9 59.7% 72.6% 47.9% 55.6% 44.3% 62.5% 39.5%
22 1998 1/1 3.0 2.0 61.5% 70.8% 56.7% 42.9% 80.0% 65.4% 42.9% 1999 37/43 6.9 3.9 60.4% 72.2% 47.6% 56.4% 39.5% 62.4% 35.7%
23 1999 32/34 2.6 3.0 57.3% 65.9% 47.7% 50.8% 38.8% 58.0% 39.6% 2000 29/30 8.3 4.4 58.7% 73.7% 49.6% 57.8% 36.8% 63.2% 37.6%
24 2000 14/18 2.4 2.8 54.3% 67.2% 48.8% 56.2% 38.3% 59.0% 36.7% 2001 13/15 5.6 5.7 55.5% 71.2% 45.9% 45.8% 36.3% 59.8% 34.1%
25 2001 23/28 4.2 3.0 58.1% 67.3% 49.1% 61.8% 35.1% 59.7% 36.4% 2002 10/11 5.5 5.7 53.9% 69.8% 43.4% 49.0% 29.6% 57.9% 37.0%
26 2002 20/22 3.5 3.3 57.9% 66.7% 49.9% 60.6% 39.4% 59.5% 37.2% 2003 26/26 7.3 4.2 54.5% 73.8% 45.2% 63.5% 42.7% 60.7% 36.5%
27 2003 18/18 1.8 2.7 62.6% 62.6% 42.3% 49.5% 41.2% 55.2% 34.4% 2004 6/6 4.5 5.5 48.7% 73.2% 49.4% 40.7% 26.3% 60.7% 35.9%
28 2004 4/4 3.8 1.8 51.5% 68.5% 51.2% 54.3% 24.2% 59.9% 37.9% 2005 17/17 11.4 4.9 56.8% 77.1% 52.2% 59.4% 40.1% 66.2% 35.8%
29 2005 3/3 3.7 2.0 68.5% 74.3% 58.9% 36.4% 27.8% 69.5% 36.5% 2006 34/34 7.0 2.9 56.6% 72.4% 47.8% 63.7% 36.2% 61.7% 34.9%
30 — —/— — — — — — — — — — 2007 13/13 4.3 4.8 57.1% 65.3% 43.1% 49.5% 26.4% 55.8% 29.5%
32 2008 2/2 5.5 2.0 60.9% 72.3% 51.4% 61.1% 54.2% 63.8% 35.8% — —/— — — — — — — — — —
Career — 128/143 3.1 2.9 58.0% 66.4% 48.2% 54.5% 39.5% 58.8% 37.1% — 259/278 6.8 4.4 57.4% 72.4% 47.1% 55.6% 38.2% 61.5% 35.9%

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 Cecil Mamiit Justin Gimelstob
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 — — — — — — — — — — — — — — — — 1995 1530 110.0 -1.36 +1.92 0.750 45.8% — — — 37.5% -0.63 1–0 — — -0.13
19 — — — — — — — — — — — — — — — — 1996 1510 118.9 +0.13 +0.36 0.915 48.2% +28 — — 29.6% -0.93 1–2 (33%) 1–4 (20%) — -0.63
20 1996 1471 104.3 +1.39 -2.25 0.743 44.8% +17 — — 18.2% -2.27 0–2 1–1 — -0.21 1997 1630 134.5 -1.35 -0.78 0.909 48.5% +30 — -55 43.3% -0.47 7–6 (54%) 10–8 (56%) — +0.60
21 1997 1441 108.9 -1.33 -0.30 0.887 47.8% +21 — — 30.4% -1.17 1–2 (33%) 0–2 — +0.42 1998 1661 129.0 +0.39 +1.22 1.052 50.8% -10 -75 -71 50.7% +0.12 6–8 (43%) 4–9 (31%) — -0.12
22 1998 1432 101.1 -0.76 -1.41 1.238 53.7% — — — 33.3% +0.33 0–1 — — +0.13 1999 1645 137.7 -0.21 -1.19 0.949 49.1% +36 -75 -122 45.0% -0.28 3–10 (23%) 7–12 (37%) — -1.22
23 1999 1552 118.6 -2.72 +1.29 0.942 48.7% +21 -25 -7 46.0% -0.43 6–6 (50%) 7–5 (58%) — +1.34 2000 1675 126.8 +0.05 +0.25 1.022 50.4% +34 -174 -115 47.5% -0.40 5–7 (42%) 10–6 (63%) — +0.17
24 2000 1538 123.5 -0.49 +0.64 0.895 47.9% +26 — — 38.6% -0.75 1–4 (20%) 1–2 (33%) — -0.42 2001 1596 108.5 -1.35 -2.71 0.849 47.0% +17 — -76 29.3% -1.39 2–4 (33%) 3–4 (43%) — +0.32
25 2001 1556 118.7 -2.71 -1.19 0.903 48.3% -16 — -31 44.3% -0.54 3–10 (23%) 5–4 (56%) — +1.11 2002 1620 119.3 -1.95 +1.16 0.880 46.9% +9 — -59 40.7% -0.81 2–0 1–2 (33%) — -0.03
26 2002 1556 122.3 -2.06 -0.26 0.918 48.5% +28 — -90 38.9% -0.89 1–3 (25%) 6–1 (86%) — +0.65 2003 1532 117.2 -2.07 -0.87 0.929 48.9% +13 — +76 40.0% -0.51 3–5 (38%) 3–7 (30%) — +1.70
27 2003 1434 110.8 -4.02 -1.08 0.769 45.2% +49 +79 +15 26.7% -1.56 1–4 (20%) 4–4 (50%) — -0.14 2004 1507 110.1 -0.55 -0.52 0.913 47.3% +4 — — 23.1% -1.69 0–3 (0%) — — -0.42
28 2004 1493 110.5 -0.62 +1.04 0.944 49.1% +47 — — 37.5% -0.38 1–1 — — -0.32 2005 1596 127.5 +2.04 +0.31 1.059 51.1% -56 — +71 48.9% +0.08 2–5 (29%) 6–7 (46%) — -0.05
29 2005 1469 101.4 +0.98 -1.17 1.195 52.7% +44 — — 60.0% +1.00 0–1 — — +0.37 2006 1606 122.4 -0.69 -1.72 0.913 49.0% -77 -132 +106 44.9% -0.32 3–5 (38%) 6–7 (46%) — +0.54
30 2006 1430 95.2 — — — — — — — — — — — — — 2007 1537 116.4 -4.94 -3.75 0.668 43.5% -37 — +128 10.0% -2.37 0–1 0–2 — -0.45
31 2007 1433 89.5 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
32 2008 1469 105.8 -0.73 -1.29 0.989 49.4% — — — 40.0% -0.40 1–0 0–1 — +0.10 — — — — — — — — — — — — — — — —
33 2009 1449 98.8 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
34 2010 1440 101.1 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
35 2011 1432 98.6 — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 1631 117.9 -2.17 -0.11 0.899 48.0% +20 +21 -35 39.3% -0.78 15–34 (31%) 24–20 (55%) 99.3 +2.12 — 1722 132.5 -0.75 -0.68 0.933 48.8% +5 -103 -6 41.7% -0.51 35–56 (38%) 51–68 (43%) 92.8 +0.10

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.