Claire Liu vs Sofia Costoulas Head to Head Tennis Stats and Match Analysis

Claire Liu and Sofia Costoulas have met 1 time in professional competition, with Sofia Costoulas leading 1-0. Their most recent encounter was in March 2026 at W75 Kofu, where Sofia Costoulas prevailed on hard court 6-7(4) 6-3 7-6(3).

Claire Liu: Against opponents ranked outside top 100 players in the last 52 weeks, Claire Liu holds a 34-14 record (70.8%). Throughout her career, she has competed against opponents ranked outside top 100 326 times, winning 209 (64.1%). Over the past 10 matches, she holds a 8-2 record. Over the past 52 weeks, Claire Liu has posted a 37-21 record (63.8% win rate). Over her career at WTA level, Claire Liu holds a record of 25-43 (36.8%) on hard, 14-13 (51.9%) on clay, and 3-6 (33.3%) on grass. At Challenger/ITF level: 73-34 (68.2%) on clay, 70-54 (56.5%) on hard, and 2-2 (50.0%) on grass. In the last 52 weeks: 3-4 (42.9%) on hard and 1-1 (50.0%) on clay at WTA level. 14-7 (66.7%) on clay and 7-6 (53.8%) on hard at Challenger/ITF level. Claire Liu has won nine titles at Challenger/ITF level (eight on clay and one on hard). Claire Liu serves an average of 3.2 aces per match in the last 52 weeks, consistent with her career average of 2.8.

Sofia Costoulas: Against opponents ranked outside top 100 players in the last 52 weeks, Sofia Costoulas holds a 44-26 record (62.9%). Throughout her career, she has competed against opponents ranked outside top 100 313 times, winning 192 (61.3%). Over the past 10 matches, she holds a 6-4 record. Over the past 52 weeks, Sofia Costoulas has posted a 45-30 record (60.0% win rate). Over her career at WTA level, Sofia Costoulas holds a record of 2-1 (66.7%) on hard and 0-1 on clay. At Challenger/ITF level: 130-70 (65.0%) on hard and 55-46 (54.5%) on clay. In the last 52 weeks: 2-1 (66.7%) on hard and 0-1 on clay at WTA level. 29-17 (63.0%) on hard and 10-6 (62.5%) on clay at Challenger/ITF level. Sofia Costoulas has won five titles at Challenger/ITF level (four on hard and one on clay). Sofia Costoulas serves an average of 3.3 aces per match in the last 52 weeks, consistent with her career average of 3.2.