Mateusz Kowalczyk
all rivalries →No career rivalry data available.
H2H data updated: 2026-09-03 00:00 UTC
Mateusz Kowalczyk vs Boy Westerhof
Compare the head-to-head record, career totals, season-by-season performance, and match log for Mateusz Kowalczyk vs Boy Westerhof.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
0
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0
0 main draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Boy Westerhof | 6-4 7-6(4) | Mateusz Kowalczyk | Match data | Jul 26, 2010 | Q1 | Croatia Open Umag | ATP 250 | Clay |
1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mateusz Kowalczyk | #1,495 | #694 | 34 | 1,500 | 0 | 0 | — | 0 | 0 | 0 | 0 | 0 | 0 |
| Boy Westerhof | #838 | #201 | 246 | 1,518 | 0 | 1 | 0.0% | 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 | Mateusz Kowalczyk | Boy Westerhof | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 27 | — | — | — | — | — | — | — | 2013 | 0–1 | 0.0% | #236 | 1,491 | 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 | Mateusz Kowalczyk | Boy Westerhof | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 2008 | 1483 | 99.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2007 | 1504 | 103.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2010 | 1468 | 99.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2010 | 1500 | 94.9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2012 | 1453 | 98.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2012 | 1490 | 96.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2013 | 1492 | 101.2 | -1.89 | -0.25 | 0.650 | 39.8% | — | — | — | 0.0% | -4.00 | — | — | — | +0.07 |
| 28 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2014 | 1454 | 99.9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2015 | 1435 | 97.6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1500 | 98.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1519 | 98.0 | -1.89 | -0.25 | 0.650 | 39.8% | — | — | — | 0.0% | -4.00 | — | — | — | +7.00 |
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.
Boy Westerhof
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Aljaz Bedene | 0 | 1 | 1 | Jul 25, 2013 | H2H |