SAN DIEGO: Former NCAA singles champions Mackenzie McDonald and Marcos Giron won their matches on Wednesday at the San Diego Open ATP 250. McDonald beat error-prone Henri Laaksonen of Switzerland 6-0, 6-2 in just 54 minutes.
Third-seeded Giron moved into the quarterfinals with a 6-4, 6-3 victory over Argentine Tomas Martin Etcheverry. The world No. 58 converted four of six break-point opportunities and finished with 30 winners to 17 unforced errors.
McDonald, who swept the NCAA singles and doubles titles at UCLA in 2016, earned a rematch in the second round against Jenson Brooksby.
"I'm happy with how I'm playing. I love being in California," McDonald said. "Henri's a great player. I just think I took it to him today, played my game."
"I'm pumped to get through this one," Giron said. "This is my first time being seeded, so it's interesting coming into a tournament not having played a first-round match. But I've been playing well the last month. Tomas is top 100 in the world for a reason.
"Playing in Southern California, it really is home to me," he added. "It's amazing to play here."
Alejandro Tabilo of Chile won 7-5, 6-2 over American Steve Johnson. Colombia's Daniel Elahi Galan defeated Marc-Andrea Huesler of Switzerland 6-3, 7-5.
In doubles, the wild-card pairing of 2010 NCAA singles winner Bradley Klahn (Stanford) and Spaniard Fernando Verdasco dispatched Hans Hach Verdugo and Treat Huey, 6-4, 6-3. Agencies