2021-09-28 07:31:48 GMT+00:00 - Both seeded players in action lost Monday during the opening round of the ATP Tour"s Sofia (Bulgaria) Open. Italy"s Gianluca Mager upset sixth-seeded Adrian Mannarino of France 6-3, 6-2, and France"s Benoit Paire knocked off seventh-seeded Alejandro Davidovich Fokina of Spain 6-4, 7-5. Mager had lost his first-round match in three of his past four tournaments, including the U.S. Open. He saved the only break point he faced against Mannarino. Paire, who ended a three-match losing streak that featured an opening-round defeat in New York, finished with an 11-1 advantage in aces against Davidovich Fokina. In the event"s only other match Monday, Serbia"s Miomir Kecmanovic topped Bulgarian wild-card entrant Adrian Andreev 7-6 (7), 6-4. San Diego Open San Diego native Brandon Nakashima broke serve on the final point of the match to complete a 6-7 (5), 6-1, 7-5 win over Italy"s Fabio Fognini in the first round of his hometown event. Nakashima, 20, finished with eight aces and just two double faults. Fognini double-faulted nine times and had only one ace. Another San Diego high school product, 23-year-old Taylor Fritz, downed Italy"s Salvatore Caruso 6-4, 7-6 (2). Elsewhere in the opening round, Russia"s Aslan Karatsev topped Argentina"s Federico Delbonis 6-1, 7-5.