Name: Guilherme Clezar
Country: Brazil
Birthdate: 31.12.92, 31 years
ATP ranking: 878
TOP ranking's position: 153 (03.08.15, 330 points)
Points: 15
Prize money: 625196 $
Matches total: 660
Win: 347
%: 52.58 %
Country: Brazil
Birthdate: 31.12.92, 31 years
ATP ranking: 878
TOP ranking's position: 153 (03.08.15, 330 points)
Points: 15
Prize money: 625196 $
Matches total: 660
Win: 347
%: 52.58 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2022 | 2/1 | 0/0 | 2/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2021 | 1/6 | 0/1 | 1/5 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 21/12 | 6/3 | 10/6 | 5/3 | 0/0 | 0/0 | 0/0 |
| 2019 | 31/32 | 2/8 | 29/23 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2018 | 27/27 | 1/3 | 26/23 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2017 | 36/30 | 1/4 | 35/26 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2016 | 24/29 | 6/9 | 18/18 | 0/1 | 0/0 | 0/1 | 0/0 |
| 2015 | 43/35 | 9/7 | 34/27 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2014 | 20/26 | 1/3 | 19/23 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2013 | 36/32 | 3/5 | 33/26 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2012 | 28/30 | 8/5 | 20/25 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2011 | 52/24 | 10/6 | 42/18 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2010 | 18/19 | 4/5 | 13/13 | 0/0 | 0/0 | 1/1 | 0/0 |
| 2009 | 7/6 | 0/1 | 7/4 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2008 | 1/2 | 0/0 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2007 | 0/2 | 0/0 | 0/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 347/313 | 51/60 | 290/242 | 5/5 | 0/0 | 1/6 | 0/0 |
| perc. % | 52.58 % | 45.95 % | 54.51 % | 50 % | 0 % | 14.29 % | 0 % |
Guilherme Clezar / scheduled / last
| no matches found |
Guilherme Clezar form / year 2019 / surface: Hard
Guilherme Clezar / year 2019 / surface: Hard
| 20.03.19 | 2nd round | Soon-Woo Kwon | Guilherme Clezar | 7-66, 6-3 |  | match details |  Zhangjiagang Challenger | Hard |
| 19.03.19 | 1st round | Guilherme Clezar | Harri Heliovaara | 7-61, 6-3 |  | match details | ||
| 12.03.19 | 1st round | Max Purcell | Guilherme Clezar | 7-63, 7-63 | | match details | Shenzhen Challenger | Hard |
| 07.03.19 | 3rd round | Hiroki Moriya | Guilherme Clezar | 6-3, 6-4 | | match details | Zhuhai Challenger | Hard |
| 06.03.19 | 2nd round | Guilherme Clezar | Runhao Hua | 6-2, 4-6, 7-5 | | match details | ||
| 26.02.19 | 2nd round | Gastao Elias | Guilherme Clezar | 0-6, 6-2, 7-64 | | match details |  Yokohama Challenger | Hard |
| 29.01.19 | 2nd round | Tsung-Hua Yang | Guilherme Clezar | 7-5, 7-62 | | match details |  Launceston Challenger | Hard |
| 23.01.19 | 2nd round | Jeremy Beale | Guilherme Clezar | 6-2, 6-4 | | match details | Burnie Challenger | Hard |
| 08.01.19 | q 1 | Rudolf Molleker | Guilherme Clezar | 7-610, 7-66 | | match details | Melbourne | Hard |
| 31.12.18 | 1st round | Tomas Barrios Vera | Guilherme Clezar | 4-6, 6-2, 6-3 | | match details |  Noumea Challenger | Hard |