MIAMI (AP) — Qualifier Roberto Quiroz overcame a shaky stretch in the first set Friday to beat American Noah Rubin 7-6 (1), 6-3 in the opening round of the Delray Beach Open.

Quiroz led 5-3, lost serve twice and then rallied, dominating the tiebreaker. The victory was the second career ATP Tour win for the 28-year-old Ecuadorian, who played at the University of Southern California.

Quiroz's uncle, 1990 French Open champion Andres Gomez, played his final ATP Tour match at the inaugural Delray Beach Open in 1993.

In other first-round play, American Christian Harrison swept Tomas Martin Etcheverry of Argentina, 6-4, 6-2, and Bjorn Fratangelo beat fellow American Kevin King 6-2, 6-2. .

Daniel Elahi Galan of Colombia eliminated Andrej Martin of Slovakia, 6-4, 6-4, and Cameron Norrie of Britain drubbed J.C. Aragone of the United States.

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