|Jack Sock, playing doubles in the recent|
U.S. Open, won both of his singles matches
in his Davis Cup debut. Photo by Paul Bauman
Sock, who collapsed during his second-round match in the U.S. Open and retired with severe cramps, led the United States over Uzbekistan 3-1 in Tashkent, Uzbekistan, this weekend in his Davis Cup debut.
The United States will remain in the 16-team World Group in 2016, while Uzbekistan will stay in zonal competition.
The 29th-ranked Sock defeated No. 62 Denis Istomin 6-2, 2-6, 6-4, 6-4 today to clinch the Americans' victory. The last match, between Steve Johnson of the United States and Farrukh Dustov, was not played.
Sock, who will turn 23 on Thursday, beat the 158th-ranked Dustov 7-5, 6-3, 6-2 on Friday to tie the series 1-1. Johnson and Sam Querrey, a San Francisco native, then outclassed Dustov and Istomin 6-3, 6-2, 6-2 on Saturday for a 2-1 lead.