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

Mark Merklein vs David Nainkin H2H: 0-2

David Nainkin holds a 2–0 lead over Mark Merklein in their ATP head-to-head. Across 2 main-draw meetings, David Nainkin leads 1–0 on grass and 1–0 on hard courts. Most recently, David Nainkin won the 1998 US Open round of 128 6-7(3) 6-0 6-4 6-4.

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Mark Merklein
BAH Age 54 Right-Handed 188 cm / 6'2"
H2H
0 – 2
2 main draw meetings
David Nainkin
RSA Age 55 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
David Nainkin #188 6-7(3) 6-0 6-4 6-4 Mark Merklein #358 Match data Sep 2, 1998* R128 US Open Grand Slam Hard
David Nainkin #227 6-3 6-3 Mark Merklein #305 Match data Jun 10, 1998* R64 Queen's Club Championships ATP World Series → modern equivalent ATP 250 Grass

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
Mark Merklein #1,361 #160 269 1,508 3 12 20.0% 0 0 0 0 0 0
David Nainkin #910 #132 350 1,628 26 43 37.7% 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 Mark Merklein David Nainkin
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
21 — — — — — — — 1992 1–1 50.0% #261 1,514 0 0
22 1994 0–2 0.0% #323 1,485 0 0 1993 4–5 44.4% #163 1,528 0 0
23 1995 0–1 0.0% #389 1,469 0 0 1994 3–10 23.1% #176 1,485 0 0
24 1996 0–1 0.0% #184 1,460 0 0 1995 4–5 44.4% #173 1,521 0 0
25 1997 3–4 42.9% #234 1,495 0 0 1996 5–10 33.3% #172 1,509 0 0
26 1998 0–4 0.0% #485 1,447 0 0 1997 2–2 50.0% #282 1,532 0 0
27 — — — — — — — 1998 7–9 43.8% #136 1,614 0 0
28 — — — — — — — 1999 0–1 0.0% #713 1,601 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 Mark Merklein David Nainkin
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 %
21 — — — — — — — — — — — — — — — — — 1992 1 1 2 50.0% — — — — — — — — — — — —
22 1994 0 2 2 0.0% — — — — — — — — — — — — 1993 4 4 8 50.0% — — — — 0 1 1 0.0% — — — —
23 1995 — — — — 0 1 1 0.0% — — — — — — — — 1994 2 9 11 18.2% — — — — 1 1 2 50.0% — — — —
24 1996 — — — — 0 1 1 0.0% — — — — — — — — 1995 0 2 2 0.0% 1 1 2 50.0% — — — — 3 2 5 60.0%
25 1997 3 3 6 50.0% 0 1 1 0.0% — — — — — — — — 1996 3 5 8 37.5% 0 1 1 0.0% 2 3 5 40.0% 0 1 1 0.0%
26 1998 0 2 2 0.0% 0 1 1 0.0% 0 1 1 0.0% — — — — 1997 1 1 2 50.0% — — — — 1 1 2 50.0% — — — —
27 — — — — — — — — — — — — — — — — — 1998 5 7 12 41.7% — — — — 2 2 4 50.0% — — — —
28 — — — — — — — — — — — — — — — — — 1999 — — — — 0 1 1 0.0% — — — — — — — —
Career — 3 7 10 30.0% 0 4 4 0.0% 0 1 1 0.0% — — — — — 16 29 45 35.6% 1 3 4 25.0% 6 8 14 42.9% 3 3 6 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 15/15 of Mark Merklein's and 61/69 of David Nainkin'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 Mark Merklein David Nainkin
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 — —/— — — — — — — — — — 1992 2/2 4.5 5.5 57.0% 64.9% 60.1% 20.8% 40.0% 63.0% 35.5%
22 1994 2/2 6.0 3.0 72.6% 66.1% 49.7% 53.3% 26.7% 61.4% 31.9% 1993 7/9 2.1 6.0 62.4% 64.1% 46.8% 48.0% 47.6% 57.7% 45.1%
23 1995 1/1 2.0 2.0 56.0% 46.4% 45.5% 28.6% 28.6% 46.0% 39.7% 1994 11/13 2.5 6.4 59.9% 62.1% 38.5% 45.5% 46.8% 52.7% 40.6%
24 1996 1/1 2.0 2.0 67.9% 55.3% 44.4% 50.0% 50.0% 51.8% 29.6% 1995 7/9 2.1 5.7 62.5% 65.3% 44.6% 66.2% 35.2% 57.7% 33.3%
25 1997 7/7 6.3 5.1 58.0% 72.0% 51.6% 53.6% 45.9% 63.7% 36.3% 1996 13/15 2.1 4.8 59.1% 59.8% 43.4% 51.6% 55.4% 53.1% 36.4%
26 1998 4/4 5.5 5.3 59.5% 68.2% 35.9% 53.5% 8.8% 55.1% 30.3% 1997 4/4 2.8 3.3 64.0% 63.6% 45.4% 55.7% 45.2% 56.8% 37.1%
27 — —/— — — — — — — — — — 1998 16/16 3.8 6.0 59.5% 66.9% 44.0% 50.8% 43.0% 57.8% 35.0%
28 — —/— — — — — — — — — — 1999 1/1 1.0 4.0 56.8% 66.7% 25.0% 14.3% 55.6% 48.6% 44.9%
Career — 15/15 5.5 4.5 60.9% 67.4% 46.3% 51.6% 32.5% 59.1% 33.9% — 61/69 2.7 5.5 60.3% 63.7% 43.6% 50.2% 46.2% 55.8% 37.6%

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 Mark Merklein David Nainkin
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
21 — — — — — — — — — — — — — — — — 1992 1514 108.9 -1.23 +1.69 0.960 49.5% — — — 50.0% -0.50 1–1 1–0 — +0.13
22 1994 1485 104.7 +0.19 -0.32 0.825 46.4% — — — 28.6% -1.14 0–1 0–1 — -0.25 1993 1529 119.4 -1.75 +2.08 1.066 51.5% +41 — — 37.5% -0.17 3–0 (100%) 0–2 — +0.33
23 1995 1470 96.5 +0.46 -1.43 0.734 42.6% — — — 0.0% -3.50 — — — +0.18 1994 1486 111.8 -5.58 +1.24 0.858 46.6% +9 — — 31.3% -1.44 1–4 (20%) 1–1 — +0.29
24 1996 1461 100.6 -3.04 -1.60 0.615 40.9% — — — 0.0% -3.50 — — — -0.02 1995 1521 108.6 -2.01 -2.30 0.787 46.1% -2 — — 43.5% -0.61 3–2 (60%) 2–2 (50%) — +0.52
25 1997 1495 118.2 +1.03 -0.13 0.999 49.8% +40 — — 38.9% 0.00 3–1 (75%) 0–4 (0%) — -0.05 1996 1509 108.0 -5.09 -0.17 0.775 44.7% +16 — +94 34.2% -1.40 1–2 (33%) 2–1 (67%) — +1.18
26 1998 1447 93.2 -2.11 -4.14 0.674 42.7% — — — 10.0% -2.90 — 1–0 — +0.14 1997 1532 105.1 -1.82 +1.24 0.858 47.5% — — — 44.4% -1.11 1–0 — — -0.05
27 — — — — — — — — — — — — — — — — 1998 1615 126.5 -3.09 -1.13 0.830 46.6% -1 — +18 44.2% -0.60 2–1 (67%) 3–1 (75%) — +0.14
28 — — — — — — — — — — — — — — — — 1999 1601 104.4 +1.29 -0.16 0.875 46.9% — — — 0.0% -1.50 — 0–1 — -0.06
Career — 1508 106.9 -0.23 -1.41 0.829 46.4% +40 — — 25.6% -1.31 3–2 (60%) 1–5 (17%) 99.4 0.00 — 1628 121.5 -3.47 0.00 0.850 46.9% +12 — +60 38.4% -0.90 12–10 (55%) 9–8 (53%) 105.3 +3.59

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.