Player data updated: 2026-09-01 02:16 UTC

Boris Kozlov

USA Age 25 185 cm / 6'1" Plays: Right-Handed

Boris Kozlov represented the United States on the ATP Tour and reached a career-high ranking of No. 1600. In TennisDB's records, Boris Kozlov finished with a career record of 0–0 and no singles titles.

Peak ranking

1,600 (Jan 15, 2018)

Elo peak

1500 (3rd percentile)

Career record

0–0

Career titles

Prize money

$12,259

Records cover recorded main-draw singles results in TennisDB's ATP event archive, including credited walkovers; qualifying is shown separately below.

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ATP Matches full match log →

Boris Kozlov's recent, live, and scheduled ATP matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Alexander Bublik #131	1-6 4-6	L	H2H	Match data	Feb 19, 2018	Q1 Q	Delray Beach Open	ATP 250	Hard
Vasek Pospisil #116	4-6 1-6	L	H2H	Match data	Feb 20, 2017	Q1 Q	Delray Beach Open	ATP 250	Hard

Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.

Career Results

Boris Kozlov career results by season
Season	Type	L	M	Win %	Start Rank	End Rank
2017	Qualifying Q	1	1	0.0%	—	—
2018	Qualifying Q	1	1	0.0%	—	—
Career	—	0	0	—	—	—

Career Results by Surface

Boris Kozlov career results by season and surface
Season	Type	Hard				Clay				Grass				Total
Season	Type	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
2017	Qualifying Q	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%
2018	Qualifying Q	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%

Advanced Stats

Boris Kozlov advanced statistics by season
Season	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule
2017	1493	101.5	—	—	—	—	—	—	—	—	—	—	—	—	—
2018	1483	98.5	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	1500	100.0	—	—	—	—	—	—	—	—	—	—	—	—	—

Tournament Results by Category

ATP 250

Boris Kozlov ATP 250 results by season
Season	DLB	W-L Win %
2017	Q1	0–1 (0%)
2018	Q1	0–1 (0%)
W-L	0–2 (0%)	0–2 (0%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Current rank

2073

Career high

1600

Career-high date

Jan 15, 2018

First Top 100

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First Top 50

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First Top 20

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First Top 10

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Ranking History Matrix

Boris Kozlov ranking history by month and season
Season	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2017	1654	1654	1645	1656	1655	1648	1676	1678	1666	1639	1604	1606
2018	1600	—	—	—	—	—	—	—	—	—	—	—
2024	—	—	—	1697	1711	1720	1758	1932	1936	1994	2005	2065
2025	2068	2063	2073	—	—	—	—	—	—	—	—	—

Frequently Asked Questions

How old is Boris Kozlov?: Boris Kozlov is 25 years old.
Which country does Boris Kozlov represent?: Boris Kozlov represents United States in TennisDB's ATP records.
How tall is Boris Kozlov?: Boris Kozlov is 185 cm / 6'1".
Is Boris Kozlov left-handed or right-handed?: Boris Kozlov plays right-handed.
How many Grand Slams has Boris Kozlov won?: Boris Kozlov has not won a Grand Slam title.
How many Masters 1000 titles has Boris Kozlov won?: TennisDB does not group any of Boris Kozlov's titles under the modern Masters 1000 category.
What is Boris Kozlov's highest ATP ranking?: Boris Kozlov's career-high ATP singles ranking is world No. 1600, first achieved on January 15, 2018.
What is Boris Kozlov's career win-loss record?: Boris Kozlov has a career ATP singles record of 0 wins and 0 losses.
How much career prize money has Boris Kozlov earned?: Boris Kozlov has earned at least $12,259 in career prize money from professional tennis.