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Derek Kellermann

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Cumming, GA
4.5S year-end 2026
i
Self-rated, or a medical appeal
11 matches · 6W–5L · seasons 2021–2024
Match history11 matches
L
2023-11-19 · 6 TDC Hall · #2 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
4-6, 6-4, 0-1
W
2023-11-01 · 6 TDC Hall · #3 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
5-7, 6-3, 1-0
L
2023-10-07 · 6 TDC Hall · #1 Doubles · 8.5 · with Johanna Farrell mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
5-7, 5-7
W
2023-10-01 · 6 TDC Hall · #1 Doubles · 8.5 · with Kathryn Hall mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
6-2, 6-0
W
2023-09-10 · 6 TDC Hall · #1 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
6-3, 6-4
L
2022-11-13 · 10 Dominion Hall · #1 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
0-6, 3-6
W
2022-10-15 · 10 Dominion Hall · #1 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
6-3, 6-2
W
2022-10-09 · 10 Dominion Hall · #1 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
3-6, 7-5, 1-0
L
2022-10-01 · 10 Dominion Hall · #2 Doubles · 8.5 · with Jeanine Wisor mixed
no estimate for this season
i
Our model did not follow this player through that season: none of their matches that season carried an individual NTRP level (55 & Over and combo leagues are rated on combined levels), so it had nothing to start from. The match still counts toward the USTA rating.
7-5, 4-6, 0-1
L
2020-02-23 · Hudlow TC (Danny Donat)* · #3 Doubles · 4.5 · with Kay Lee
loading the estimate
2-6, 4-6
W
2020-02-09 · Hudlow TC (Danny Donat)* · #3 Doubles · 4.5 · with Kay Lee
loading the estimate
6-0, 6-1
Where you rank locallyagainst everyone at your level
Teams3 teams · 2020–2023
Over timerating by season, and how you rank
By level2 levels played
4.5
1W–1L
not enough matches yet
8.5mixed
55.6%
5W–4L · 52.5% of games

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

By lineusually #1 Doubles, 55% of the time
#1 Doubles
55%
6 matches
#3 Doubles
27%
3 matches
#2 Doubles
18%
2 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.

I really think a champion is defined not by their wins but by how they can recover when they fall.
Serena Williams