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.
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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.