Karatsev Advances in San Diego; Paire Wins in Sofia

San Diego Open—San Diego, California 

First-round results:

Aslan Karatsev Defeats Federico Delbonis 61 75

*****

Sofia Open—Sofia, Bulgaria

First-round results:

Gianluca Mager Defeats (6) Adrian Mannarino 63 62
Benoit Paire Defeats (7) Alejandro Davidovich Fokina 64 75
Miomir Kecmanovic Defeats Adrian Andreev 76(7) 64