Jack Sock, Angelique Kerber win
WASHINGTON -- Jack Sock was asked about his upcoming match with No. 11-ranked Kei Nishikori, a query that ended with high praise for Nishikori's level of play.
"Yeah, thanks for that," Sock shot back in a deadpan tone.
No. 94-ranked Sock played pretty well himself Tuesday, beating No. 59-ranked Igor Sijsling 6-4, 6-2 in the first round of the Citi Open. That victory over Sijsling -- the second-highest-ranked opponent Sock has ever beaten -- sets up a second-round matchup ...
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