Frenchman Jo-Wilfried Tsonga has become the first high-profile casualty in the men's singles at the US tennis Open in New York.
The fifth seed was beaten in 4 sets by Slovakian Martin Klizan in the second round.
Tsonga produced a strangely lacklustre display as he suffered his earliest-ever U.S. Open exit.
The left-handed Klizan had never been beyond the second round at a grand slam event before but he surprised Tsonga with some inspired tennis.
Tsonga rallied from 4-1 down in the fourth set to 4-3 but the 23-year-old Klizan held his nerve to seal the biggest victory of his career.
