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Guilherme Clezar

BrazilAge, ranking and results

Guilherme Clezar is a retired tennis player who reached a career-high ATP Tour ranking of No. 153 on August 3, 2015.

15ATP Tour matches

Updated Oct 5, 2026, 3:07 PM ET

Titles0 Grand Slam titles0 Career highNo. 153Aug 3, 2015 Agatha's recordNone yetno graded calls on him yet

About Guilherme Clezar

Guilherme Clezar was born on December 31, 1992, in Porto Alegre, Brazil. He played right-handed with a two-handed backhand and turned pro in 2009. On August 3, 2015, he reached a career-high ATP Tour ranking of No. 153. Clezar retired in 2024.

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Agatha Research DeskUpdated Oct 5, 2026

Match history15

Every ATP Tour, Grand Slam and Olympic main-draw match in our records, newest first. A walkover is listed but never counted in a record.

2018: 1-2

Date	Tournament	Round	Opponent	Result	Score	Surface
Mar 1	Brasil Open		Albert Ramos-Vinolas	L	3-6, 4-6	Clay
Mar 1	Brasil Open	Round 2	Albert Ramos-Vinolas	L	3-6, 4-6	Clay
Feb 27	Brasil Open	Round 1	Thiago Monteiro	W	6-3, 1-6, 7-5	Clay

Date	Tournament	Round	Opponent	Result	Score	Surface
Feb 27	ATP Brasil Open	Round 1	Guido Pella	L	2-6, 3-6	Clay

Date	Tournament	Round	Opponent	Result	Score	Surface
Aug 29	US Open	Round 1	Marco Chiudinelli	L	6-2, 6-7(6), 2-6, 4-6	Hard
Feb 22	Brasil Open	Round 1	Daniel Gimeno-Traver	L	6-3, 4-6, 1-6	Clay

2015: 1-4

Date	Tournament	Round	Opponent	Result	Score	Surface
Apr 7	Fayez Sarofim & Co. U.S. Men's Clay Court Championship	Round 1	Janko Tipsarevic	L	4-6, 6-3, 6-7(7)	Clay
Feb 16	ATP Rio Open	Round 1	Thiemo De Bakker	L	7-5, 3-6, 1-6	Clay
Feb 9	Brasil Open	Round 1	Albert Ramos-Vinolas	L	5-7, 5-7	Clay
Feb 9	Brasil Open		Albert Ramos-Vinolas	L	5-7, 5-7	Clay
Feb 1	Ecuador Open Quito		Jason Kubler	W	6-4, 7-5	Clay

Date	Tournament	Round	Opponent	Result	Score	Surface
Feb 25	ATP Brasil Open	Round 1	Martin Klizan	L	4-6, 3-6	Clay
Feb 17	ATP Rio Open 500	Round 1	Federico Delbonis	L	1-6, 1-6	Clay

Date	Tournament	Round	Opponent	Result	Score	Surface
Feb 12	ATP Brasil Open	Round 1	Thomaz Bellucci	L	6-7(4), 7-5, 6-7(1)	Clay

Date	Tournament	Round	Opponent	Result	Score	Surface
Feb 7	ATP Brasil Open	Round 1	Joao Souza	L	3-6, 2-6	Clay

How he is doing nowThrough Mar 1

Last 101-9LLWLLLLLLLNewest first. Two losses in a row.

Mar 1vs Albert Ramos-VinolasMar 1 - Brasil OpenL3-6, 4-6
Mar 1vs Albert Ramos-VinolasMar 1 - Brasil Open, Round 2L3-6, 4-6
Feb 27vs Thiago MonteiroFeb 27 - Brasil Open, Round 1W6-3, 1-6, 7-5
Feb 27vs Guido PellaFeb 27 - ATP Brasil Open, Round 1L2-6, 3-6
Aug 29vs Marco ChiudinelliAug 29 - US Open, Round 1L6-2, 6-7(6), 2-6, 4-6
Feb 22vs Daniel Gimeno-TraverFeb 22 - Brasil Open, Round 1L6-3, 4-6, 1-6

CareerPro since 2009

17years2009 to 2018

2011First ATP matchLost to Joao Souza, ATP Brasil Open
2015Career high No. 153Aug 3, 2015
Mar 1, 2018Latest matchLost to Albert Ramos-Vinolas, Brasil Open

Grand Slam titles

AO0-

RG0-

WIM0-

USO0Round 1 (2016)0-1 in our records

Honors

South American Games bronze medal, singles, Medellin 2010

First ATP match

Feb 7, 2011: lost to Joao Souza 3-6, 2-6ATP Brasil Open, on clay

Latest match

Mar 1, 2018: lost to Albert Ramos-Vinolas 3-6, 4-6Brasil Open, on clay court

Most often against

The players he has met most in our records, with the head-to-head.

Albert Ramos-Vinolas4 meetings, finals 0-0

0-4Clezar trails

Last: Mar 1, 2018, Brasil Open, lost

Sources and updates

Results and schedules come from Agatha's own records of the ATP Tour.

Updated Oct 5, 2026, 3:07 PM ET. Results and form refresh after every match; biography facts are checked weekly.