H2H data updated: 2026-09-02 00:00 UTC
Wayne Black holds a 1–0 lead over Mark Merklein in their ATP head-to-head. Across 1 main-draw meeting, Wayne Black leads 1–0 on clay. Most recently, Wayne Black won the 1998 Delray Beach Open round of 32 6-3 6-2.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Wayne Black | 6-3 6-2 | Mark Merklein | Match data | May 7, 1998* | R32 | Delray Beach Open | ATP World Series → modern equivalent 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wayne Black | #1,469 | #69 | 646 | 1,721 | 53 | 83 | 39.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Mark Merklein | #1,361 | #160 | 269 | 1,508 | 3 | 12 | 20.0% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Wayne Black | Mark Merklein | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 19 | 1993 | 0–1 | 0.0% | #719 | 1,494 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1994 | 2–2 | 50.0% | #360 | 1,520 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 1995 | 3–5 | 37.5% | #194 | 1,520 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 1996 | 3–5 | 37.5% | #252 | 1,519 | 0 | 0 | 1994 | 0–2 | 0.0% | #323 | 1,485 | 0 | 0 |
| 23 | 1997 | 4–6 | 40.0% | #99 | 1,559 | 0 | 0 | 1995 | 0–1 | 0.0% | #389 | 1,469 | 0 | 0 |
| 24 | 1998 | 17–24 | 41.5% | #94 | 1,637 | 0 | 0 | 1996 | 0–1 | 0.0% | #184 | 1,460 | 0 | 0 |
| 25 | 1999 | 9–15 | 37.5% | #151 | 1,564 | 0 | 0 | 1997 | 3–4 | 42.9% | #234 | 1,495 | 0 | 0 |
| 26 | 2000 | 8–9 | 47.1% | #107 | 1,646 | 0 | 0 | 1998 | 0–4 | 0.0% | #485 | 1,447 | 0 | 0 |
| 27 | 2001 | 5–9 | 35.7% | #160 | 1,632 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | 2002 | 0–3 | 0.0% | #417 | 1,562 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 2003 | 2–4 | 33.3% | #302 | 1,569 | 0 | 0 | — | — | — | — | — | — | — |
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 | Wayne Black | Mark Merklein | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| 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 % | |||
| 19 | 1993 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1994 | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1995 | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1996 | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 1994 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 1997 | 1 | 2 | 3 | 33.3% | 0 | 3 | 3 | 0.0% | — | — | — | — | 3 | 1 | 4 | 75.0% | 1995 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 24 | 1998 | 9 | 12 | 21 | 42.9% | 2 | 5 | 7 | 28.6% | 3 | 3 | 6 | 50.0% | 3 | 4 | 7 | 42.9% | 1996 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 25 | 1999 | 6 | 10 | 16 | 37.5% | 0 | 1 | 1 | 0.0% | 1 | 3 | 4 | 25.0% | 2 | 1 | 3 | 66.7% | 1997 | 3 | 3 | 6 | 50.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 26 | 2000 | 8 | 8 | 16 | 50.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 1998 | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 27 | 2001 | 3 | 6 | 9 | 33.3% | — | — | — | — | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2002 | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2003 | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 35 | 53 | 88 | 39.8% | 3 | 10 | 13 | 23.1% | 6 | 11 | 17 | 35.3% | 9 | 9 | 18 | 50.0% | — | 3 | 7 | 10 | 30.0% | 0 | 4 | 4 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 109/135 of Wayne Black's and 15/15 of Mark Merklein'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 | Wayne Black | Mark Merklein | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 20 | 1994 | 4/4 | 2.8 | 1.5 | 70.2% | 67.1% | 51.2% | 60.6% | 48.0% | 62.3% | 43.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 1995 | 6/8 | 1.7 | 3.0 | 58.0% | 58.6% | 45.4% | 59.3% | 57.7% | 52.9% | 37.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | 1996 | 5/8 | 1.8 | 4.4 | 49.7% | 64.0% | 48.1% | 46.2% | 38.3% | 56.2% | 33.4% | 1994 | 2/2 | 6.0 | 3.0 | 72.6% | 66.1% | 49.7% | 53.3% | 26.7% | 61.4% | 31.9% |
| 23 | 1997 | 7/10 | 2.4 | 3.1 | 61.6% | 63.8% | 51.3% | 72.1% | 47.9% | 59.2% | 39.2% | 1995 | 1/1 | 2.0 | 2.0 | 56.0% | 46.4% | 45.5% | 28.6% | 28.6% | 46.0% | 39.7% |
| 24 | 1998 | 32/41 | 3.0 | 2.3 | 59.6% | 64.1% | 48.8% | 52.2% | 44.9% | 57.8% | 38.9% | 1996 | 1/1 | 2.0 | 2.0 | 67.9% | 55.3% | 44.4% | 50.0% | 50.0% | 51.8% | 29.6% |
| 25 | 1999 | 20/24 | 2.7 | 2.4 | 59.1% | 62.6% | 49.8% | 45.0% | 47.5% | 57.4% | 40.4% | 1997 | 7/7 | 6.3 | 5.1 | 58.0% | 72.0% | 51.6% | 53.6% | 45.9% | 63.7% | 36.3% |
| 26 | 2000 | 14/17 | 3.1 | 2.0 | 49.1% | 65.0% | 55.1% | 59.5% | 43.0% | 60.3% | 36.7% | 1998 | 4/4 | 5.5 | 5.3 | 59.5% | 68.2% | 35.9% | 53.5% | 8.8% | 55.1% | 30.3% |
| 27 | 2001 | 14/14 | 3.0 | 2.6 | 52.0% | 67.0% | 52.4% | 66.8% | 41.9% | 59.9% | 37.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 28 | 2002 | 2/3 | 2.5 | 3.0 | 54.0% | 60.5% | 47.0% | 40.0% | 34.4% | 54.4% | 36.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 29 | 2003 | 5/6 | 0.8 | 2.4 | 55.6% | 65.1% | 53.1% | 33.5% | 44.6% | 60.1% | 33.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 109/136 | 2.7 | 2.5 | 56.9% | 64.1% | 50.5% | 54.3% | 45.2% | 58.3% | 38.3% | — | 15/15 | 5.5 | 4.5 | 60.9% | 67.4% | 46.3% | 51.6% | 32.5% | 59.1% | 33.9% |
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 | Wayne Black | Mark Merklein | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 19 | 1993 | 1494 | 102.0 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | 0–1 | — | -0.05 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1994 | 1521 | 117.4 | +0.75 | +2.05 | 1.145 | 52.7% | +24 | — | — | 54.5% | +0.45 | 1–2 (33%) | 1–0 | — | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1995 | 1520 | 104.0 | -4.08 | +0.16 | 0.802 | 45.7% | +12 | — | — | 34.8% | -1.22 | 2–1 (67%) | 1–1 | — | +0.41 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1996 | 1520 | 105.8 | -2.98 | -0.77 | 0.762 | 45.5% | +21 | — | — | 38.9% | -0.89 | 1–1 | 1–2 (33%) | — | +0.58 | 1994 | 1485 | 104.7 | +0.19 | -0.32 | 0.825 | 46.4% | — | — | — | 28.6% | -1.14 | 0–1 | 0–1 | — | -0.25 |
| 23 | 1997 | 1560 | 127.7 | -1.25 | +1.72 | 0.961 | 49.8% | +47 | -40 | — | 44.4% | -0.56 | 1–3 (25%) | 2–1 (67%) | — | -0.22 | 1995 | 1470 | 96.5 | +0.46 | -1.43 | 0.734 | 42.6% | — | — | — | 0.0% | -3.50 | — | — | — | +0.18 |
| 24 | 1998 | 1638 | 129.8 | -3.18 | +0.95 | 0.922 | 48.2% | +8 | -158 | +4 | 44.4% | -0.48 | 7–10 (41%) | 7–9 (44%) | — | +0.01 | 1996 | 1461 | 100.6 | -3.04 | -1.60 | 0.615 | 40.9% | — | — | — | 0.0% | -3.50 | — | — | — | -0.02 |
| 25 | 1999 | 1564 | 128.4 | -2.62 | +0.76 | 0.947 | 48.8% | +72 | — | +17 | 40.9% | -0.45 | 3–4 (43%) | 3–2 (60%) | — | +0.36 | 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 |
| 26 | 2000 | 1647 | 125.5 | -1.66 | -0.94 | 0.925 | 48.7% | +55 | — | — | 50.0% | -0.34 | 0–3 (0%) | 5–2 (71%) | — | -0.31 | 1998 | 1447 | 93.2 | -2.11 | -4.14 | 0.674 | 42.7% | — | — | — | 10.0% | -2.90 | — | 1–0 | — | +0.14 |
| 27 | 2001 | 1632 | 123.6 | -0.93 | -0.09 | 0.934 | 49.2% | +40 | — | -69 | 37.5% | -0.66 | 0–3 (0%) | 3–1 (75%) | — | -0.49 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2002 | 1562 | 104.5 | -0.59 | +1.18 | 0.798 | 45.7% | +46 | — | — | 14.3% | -2.14 | 0–1 | 1–2 (33%) | — | -0.28 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2003 | 1569 | 113.3 | +0.03 | -0.36 | 0.845 | 46.5% | +45 | — | — | 25.0% | -1.75 | 1–1 | 0–1 | — | -0.49 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1722 | 130.0 | -2.17 | +0.45 | 0.917 | 48.4% | +37 | -123 | -17 | 41.7% | -0.61 | 16–29 (36%) | 24–22 (52%) | 98.8 | -0.32 | — | 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 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Andre Agassi | 0 | 3 | 3 | Aug 16, 2001 | H2H |
| Sebastien Grosjean | 0 | 3 | 3 | Jun 14, 2001 | H2H |
| John Van Lottum | 1 | 2 | 3 | Aug 11, 1999 | — |
| Mark Woodforde | 0 | 3 | 3 | Oct 8, 1998 | H2H |
| Mark Philippoussis | 0 | 3 | 3 | Aug 6, 1998 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| David Nainkin | 0 | 2 | 2 | Sep 2, 1998 | H2H |
| Tommy Haas | 1 | 1 | 2 | Aug 13, 1997 | H2H |
| Francisco Clavet | 0 | 1 | 1 | Aug 19, 1998 | H2H |
| Wayne Black | 0 | 1 | 1 | May 7, 1998 | H2H |
| Richard Fromberg | 0 | 1 | 1 | Aug 14, 1997 | H2H |