Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Italy
22.01.93, 32 years
22.01.93, 32 years
Guillermo Olaso vs. Giulio Mazzoli - head to head matches
| 02.06.08 | q 2 | Guillermo Olaso | Giulio Mazzoli | 6-4, 6-1 | match details |  Sassuolo | Clay |
Guillermo Olaso form & Giulio Mazzoli form
Guillermo Olaso - last matches
 M15 Singapore - I. hard | ||||
| 13.09.24 1/4 | vs. Sanhui Shin | 2-6, 2-6 |  | match details |
| 12.09.24 2nd round | vs. Leo Vithoontien | 6-2, 0-6, 6-4 |  | match details |
| 11.09.24 1st round | vs. Credit Chaiyarin | 6-4, 6-3 | | match details |
| 09.09.24 qual. | vs. Danielle Abadia | 6-3, 6-3 | | match details |
| 08.09.24 q 1 | vs. Anirudh Rao | 6-1, 6-2 | | match details |
 Lebanon F1 - Clay | ||||
| 29.09.18 1/2 | vs. Alexandre Muller | 6-4, 3-6, 0-6 | | match details |
| 28.09.18 1/4 | vs. Edoardo Eremin | 6-1, 6-4 | | match details |
| 27.09.18 2nd round | vs. Hasan Ibrahim | 6-2, 6-4 | | match details |
| 26.09.18 1st round | vs. Jaroslav Pospisil | 6-1, 6-1 | | match details |
 Germany F8 - Clay | ||||
| 19.07.18 2nd round | vs. Orlando Luz | 6-75, 0-6 | | match details |
| 18.07.18 1st round | vs. Lucas Gerch | 6-2, 6-3 | | match details |
 Spain F16 - Hard | ||||
| 27.06.18 2nd round | vs. Evan Hoyt | 6-4, 2-6, 4-6 | | match details |
| 26.06.18 1st round | vs. Antonio Cembellin Prieto | 6-3, 6-3 | | match details |
 France F10 - Clay | ||||
| 21.06.18 2nd round | vs. Maxime Tchoutakian | 5-7, 5-2, - Guillermo Olaso - retired | | match details |
| 19.06.18 1st round | vs. Eduard Guell Bartrina | 4-6, 6-3, 7-65 | | match details |
 Poznan Challenger - Clay | ||||
| 04.06.18 q 2 | vs. Ronald Slobodchikov | 6-4, 3-6, 6-1 | | match details |
| 04.06.18 qual. | vs. Jeremy Jahn | 7-65, 1-6, 2-6 | | match details |
| 03.06.18 q 1 | vs. Juan Pablo Ficovich | 6-4, 6-2 | | match details |
 Busan Challenger - Hard | ||||
| 14.05.18 qual. | vs. Jose Statham | 4-6, 2-6 | | match details |
| 13.05.18 q 2 | vs. Thomas Fancutt | 6-1, 7-5 | | match details |
| 12.05.18 q 1 | vs. Jae Hwan Kim | 6-0, 7-5 | | match details |
 Glasgow Challenger - I. hard | ||||
| 04.05.18 1/4 | vs. Lukas Lacko | 2-6, 3-6 | | match details |
| 02.05.18 2nd round | vs. Lloyd Glasspool | 6-4, 6-3 | | match details |
| 30.04.18 1st round | vs. Evgeny Karlovskiy | 7-65, 6-3 | | match details |
| Spain F10 - Clay | ||||
| 24.04.18 1st round | vs. Adrien Bossel | 4-5, - Guillermo Olaso - retired | | match details |
| Spain F9 - Clay | ||||
| 19.04.18 2nd round | vs. Steven Diez | 7-64, 1-6, 5-7 | | match details |
| 17.04.18 1st round | vs. Adrien Bossel | 6-2, 6-4 | | match details |
| Alicante Challenger - Clay | ||||
| 31.03.18 q 1 | vs. Carlos Gomez-Herrera | 6-2, 6-75, 5-7 | | match details |
| Marbella Challenger - Clay | ||||
| 24.03.18 q 1 | vs. Federico Gaio | 5-7, 6-74 | | match details |
| Lille Challenger - I. hard | ||||
| 23.03.18 1/4 | vs. Gregoire Barrere | 0-6, 1-6 | | match details |
Giulio Mazzoli - last matches
| Italy F22 - Clay | ||||
| 07.07.14 q 1 | vs. Davide Della Tommasina | 0-6, 4-6 | | match details |
| Italy F17 - Clay | ||||
| 04.07.11 1st round | vs. Federico Margini | 2-6, 3-6 | | match details |
| Italy F20 - Clay | ||||
| 20.07.09 1st round | vs. Romano Frantzen | 1-6, 1-6 | | match details |
| Reggio Emilia - Clay | ||||
| 22.06.09 q 1 | vs. Davide Bramanti | 1-6, 6-4, 0-6 | | match details |
| Sassuolo - Clay | ||||
| 02.06.08 q 1 | vs. Fabio Albicini | 6-1, 6-1 | | match details |
| 02.06.08 q 2 | vs. Guillermo Olaso | 4-6, 1-6 | | match details |