Pablo Carreno Busta of Spain ousted eighth-seeded Mikhail Kukushkin of Kazakhstan 6-1, 7-6 (3) on Monday to reach the second round of the Portugal Open.
Carreno Busta broke his opponent five times in the match but also lost his serve three times in the second set before prevailing in the tiebreaker. Both players struggled with their first serve, as Carreno Busta landed only 51 percent of his to 47 percent for Kukushkin.
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In the only other match Monday, Andrey Golubev of Kazakhstan defeated Adrian Mannarino of France 6-3, 3-6, 6-4.