Melbourne - Jack Sock completed a bleak opening day for the
American contingent at the Australian Open when he was knocked out by Japan's
Yuichi Sugita on Monday.
The eighth seed tumbled out of the tournament on the end of
a 6-1, 7-6 (7/4), 5-7, 6-3 loss in two-and-a-half hours to the 41st-ranked
It capped a dark day for the American contenders with Venus
Williams and US Open champion Sloane Stephens knocked out of the women's event
along with CoCo Vandeweghe and men's 16th seed John Isner.
Sock had a troubled build-up the year's opening Grand Slam
after a hip injury during his Hopman Cup match with Sugita in Perth earlier
He also bowed out in the Auckland Classic second round to
German Peter Gojowczyk, compounding his poor preparations.
Sock made a total of 52 unforced errors and dropped his
serve seven times to Sugita and was always chasing the match after losing the
opening two sets.
The Japanese star next faces Croatia's Ivo Karlovic.