Player

🇪🇸 Guillermo Olaso

Career matches 374

Wins 236

Losses 138

Win rate 63.1%

Elo (current) —

Surface breakdown

Hard 60.3% 76W – 50L (126 matches)

Clay 65.0% 158W – 85L (243 matches)

Grass 40.0% 2W – 3L (5 matches)

Career form (last 10)

LWWWLLWWLW

Newest on left. Hover for details.

Head-to-head (top 5 opponents)

Opponent	Played	W	L	W%
Gerard Granollers	5	3	2	60%
Eduard Esteve Lobato	4	4	0	100%
Victor Crivoi	4	1	3	25%
Steven Diez	3	2	1	67%
Evgeny Donskoy	3	1	2	33%

Recent matches

1–50 of 374

Date	Tournament	Round	Winner	Loser	Score	Surface
2026-04-13	M15 Singapore	R2	Arjun Mehrotra	Guillermo Olaso	7-6(3) 6-4	Hard
2026-04-13	M15 Singapore	R1	Guillermo Olaso	Felix Mischker	7-5 6-4	Hard
2025-08-04	M15 Singapore	R2	Guillermo Olaso	Keerthivassan Suresh	6-1 6-0	Hard
2025-08-04	M15 Singapore	R1	Guillermo Olaso	Andras Necz	6-2 6-2	Hard
2025-08-04	M15 Singapore	R1	Kasidit Samrej	Guillermo Olaso	6-3 6-4	Hard
2024-09-09	M15 Singapore	QF	San Hui Sin	Guillermo Olaso	6-2 6-2	Hard
2024-09-09	M15 Singapore	R16	Guillermo Olaso	Leo Vithoontien	6-2 0-6 6-4	Hard
2024-09-09	M15 Singapore	R32	Guillermo Olaso	Credit Chaiyarin	6-4 6-3	Hard
2018-07-16	Germany F8	R16	Orlando Luz	Guillermo Olaso	7-6(5) 6-0	Clay
2018-07-16	Germany F8	R32	Guillermo Olaso	Lucas Gerch	6-2 6-3	Clay
2018-06-25	Spain F16	R16	Evan Hoyt	Guillermo Olaso	4-6 6-2 6-4	Hard
2018-06-25	Spain F16	R32	Guillermo Olaso	Antonio Cembellin	6-3 6-3	Hard
2018-06-18	France F10	R16	Maxime Tchoutakian	Guillermo Olaso	7-5 2-5 RET	Clay
2018-06-18	France F10	R32	Guillermo Olaso	Eduard Guell Bartrina	4-6 6-3 7-6(5)	Clay
2018-06-04	Poznan CH	Q3	Jeremy Jahn	Guillermo Olaso	6-7(5) 6-1 6-2	Clay
2018-06-04	Poznan CH	Q2	Guillermo Olaso	Ronald Slobodchikov	6-4 3-6 6-1	Clay
2018-06-04	Poznan CH	Q1	Guillermo Olaso	Juan Pablo Ficovich	6-4 6-2	Clay
2018-05-14	Busan CH	Q3	Jose Rubin Statham	Guillermo Olaso	6-4 6-2	Hard
2018-05-14	Busan CH	Q2	Guillermo Olaso	Thomas Fancutt	6-1 7-5	Hard
2018-05-14	Busan CH	Q1	Guillermo Olaso	Jae Hwan Kim	6-0 7-5	Hard
2018-04-30	Glasgow CH	QF	Lukas Lacko	Guillermo Olaso	6-2 6-3	Hard
2018-04-30	Glasgow CH	R16	Guillermo Olaso	Lloyd Glasspool	6-4 6-3	Hard
2018-04-30	Glasgow CH	R32	Guillermo Olaso	Evgeny Karlovskiy	7-6(5) 6-3	Hard
2018-04-23	Spain F10	R32	Adrien Bossel	Guillermo Olaso	5-4 RET	Clay
2018-04-16	Spain F9	R16	Steven Diez	Guillermo Olaso	6-7(4) 6-1 7-5	Clay
2018-04-16	Spain F9	R32	Guillermo Olaso	Adrien Bossel	6-2 6-4	Clay
2018-04-02	Alicante CH	Q1	Carlos Gomez Herrera	Guillermo Olaso	2-6 7-6(5) 7-5	Clay
2018-03-26	Marbella CH	Q1	Federico Gaio	Guillermo Olaso	7-5 7-6(4)	Clay
2018-03-19	Lille CH	QF	Gregoire Barrere	Guillermo Olaso	6-0 6-1	Hard
2018-03-19	Lille CH	R16	Guillermo Olaso	Nicolas Mahut	7-6(4) 6-7(4) 6-3	Hard
2018-03-19	Lille CH	R32	Guillermo Olaso	Yannick Mertens	5-7 6-1 6-3	Hard
2018-03-19	Lille CH	Q3	Guillermo Olaso	Laurynas Grigelis	6-1 6-2	Hard
2018-03-19	Lille CH	Q2	Guillermo Olaso	Daniel Masur	4-6 7-5 6-2	Hard
2018-03-19	Lille CH	Q1	Guillermo Olaso	Moez Echargui	6-2 7-6(4)	Hard
2018-03-05	Egypt F8	QF	Dejan Katic	Guillermo Olaso	6-4 6-2	Hard
2018-03-05	Egypt F8	R16	Guillermo Olaso	Patrik Nema	6-2 6-3	Hard
2018-03-05	Egypt F8	R32	Guillermo Olaso	Louis Wessels	6-2 3-6 7-6(2)	Hard
2018-02-05	San Francisco CH	Q3	Karue Sell	Guillermo Olaso	7-6(1) 3-2 RET	Hard
2018-02-05	San Francisco CH	Q2	Guillermo Olaso	Jack Molloy	7-5 6-2	Hard
2018-02-05	San Francisco CH	Q1	Guillermo Olaso	Jacob Brumm	6-3 6-1	Hard
2018-01-29	Dallas CH	Q3	Evgeny Karlovskiy	Guillermo Olaso	6-7(20) 6-1 7-6(5)	Hard
2018-01-29	Dallas CH	Q2	Guillermo Olaso	Patricio Heras	6-0 6-4	Hard
2018-01-29	Dallas CH	Q1	Guillermo Olaso	Arnau Dachs	6-3 6-4	Hard
2018-01-22	Newport Beach CH	R32	Taylor Fritz	Guillermo Olaso	6-3 6-4	Hard
2018-01-22	Newport Beach CH	Q3	Guillermo Olaso	Jc Aragone	6-3 2-6 7-6(6)	Hard
2018-01-22	Newport Beach CH	Q2	Guillermo Olaso	Brayden Schnur	4-6 6-4 6-4	Hard
2018-01-22	Newport Beach CH	Q1	Guillermo Olaso	Ante Pavic	6-3 6-3	Hard
2018-01-08	Bangkok CH	R32	Pedro Martinez	Guillermo Olaso	6-4 6-4	Hard
2018-01-01	USA F1	R16	Christopher Eubanks	Guillermo Olaso	6-1 6-3	Hard
2018-01-01	USA F1	R32	Guillermo Olaso	Brandon Nakashima	6-2 7-6(4)	Hard

Aliases

atp

Guillermo Olaso (o327)

atp_short

G. Olaso (o327)

itf

Guillermo Olaso (800268143)

sackmann

Guillermo Olaso (105128)

variant

G Olaso