Jack Sock’s hot streak on clay ended Wednesday.
Sock lost to Jo-Wilfried Tsonga 6-3, 1-6, 7-6 (7-4) in the second round of the Madrid Open.
Sock, who played in high school at Blue Valley North, had won the U.S. Clay Court Championships in his last tournament.
Tsonga got a a break of serve in the first set, which he won in just 28 minutes.
Sock responded with two breaks of serve in the second set, and the third set was even.
With the scores level at three points apiece in the tie-breaker, Tsonga took the match by winning four of the last five points.