Third-seeded Sam Querrey of the U.S. double-faulted on the last two points of the third-set tiebreaker to lose to qualifier Ernests Gulbis of Latvia 6-4, 4-6, 7-6 (4) at the Delray Beach International Championships on Thursday.
Querrey double-faulted eight times in the match. Querrey, who led 4-0 in the third set, double-faulted at 30-40 when serving for the match at 5-4 in the third set.
"I played a sloppy game at 4-1, and then at 5-4 I played some tentative shots and the double-fault killed me and then it's a 50-50 match after that." Querrey said. "It was just one of those days, one of those matches."