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Zack Czajkowski

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Durham, NC
4.5C year-end 2025
i
Computer — generated by the USTA algorithm from match play
123 matches · 80W–43L · seasons 2022–2026
Match history123 matches
L
2026-09-26 · Singles tourney
doesn’t count toward your NTRP rating
1-6, 3-6
W
2026-09-26 · Singles tourney
doesn’t count toward your NTRP rating
6-3, 6-2
W
2026-09-25 · Singles tourney
doesn’t count toward your NTRP rating
6-4, 6-2
W
2026-06-17 · JLundberg-DUR · #1 Singles · 4.5
loading the estimate
3-6, 6-4, 1-0
W
2026-06-03 · JLundberg-DUR · #1 Singles · 4.5
loading the estimate
6-3, 1-6, 1-0
L
2026-05-27 · JLundberg-DUR · #1 Singles · 4.5
loading the estimate
5-7, 6-7
L
2026-04-19 · SBible-UNC · #3 Doubles · 4.5 · with Luc Sanchez
loading the estimate
6-7, 2-6
L
2026-03-31 · MHanauer-DUR · #1 Singles · 5.0
loading the estimate
2-6, 4-6
W
2026-03-28 · SBible-UNC · #1 Doubles · 4.5 · with Daniel Martchek
loading the estimate
7-6, 6-0
L
2026-03-14 · SBible-UNC · #1 Doubles · 4.5 · with Daniel Martchek
loading the estimate
6-7, 6-7
W
Default
2026-03-10 · MHanauer-DUR · #2 Doubles · 5.0 · with Matthew Hanauer
doesn’t count toward your NTRP rating
6-0, 6-0
L
2026-02-14 · SBible-UNC · #2 Singles · 4.5
loading the estimate
6-1, 5-7, 0-1
Where you rank locallyagainst everyone at your level
Teams23 teams · 2022–2026
Over timerating by season, and how you rank
By level5 levels played
4.0
92.6%
25W–2L · 66.8% of games
4.5
48.6%
18W–19L · 50.9% of games
5.0
25%
3W–9L · 38.1% of games
7.5
75%
6W–2L · 58.1% of games
8.5
50%
3W–3L · 50% of games

Games won matters more than matches won — NTRP adjusts on margins.

By lineusually Singles, 27% of the time
Singles
27%
33 matches
#1 Singles
24%
30 matches
#1 Doubles
21%
26 matches
#2 Doubles
11%
13 matches
#2 Singles
9%
11 matches
#3 Doubles
5%
6 matches

How often, across every team and every match we hold — including ones that do not count toward a rating. Advanced stats has a court-position table too, and it answers a different question: how well you do there, over matches that count. A team’s own page shows how that one team uses you.

Not affiliated with or endorsed by the USTA. Ratings labelled as published are USTA year-end figures; anything we describe as an estimate is ours, not USTA’s. Match data is from USTA TennisLink.

Experience is a big word. I think it comes with time, and I have that.
Serena Williams