BELGRADE, Serbia (AP) — Bob Bryan and John Isner defeated Nenad Zimonjic and Janko Tipsarevic 7-6 (8), 5-7, 7-6 (8), 6-3 in doubles to keep the United States alive in the Davis Cup first round, cutting Serbia’s lead to 2-1.
Isner was a last-minute replacement for Bob Bryan’s twin brother Mike, who was sidelined with food poisoning on Saturday.
Isner will try to even the series on Sunday when he plays Novak Djokovic in the first reverse singles on an indoor clay court at Belgrade Arena. Sam Querrey is set to play the final singles against Viktor Troicki.
On Friday, Isner lost the opener to Troicki, while Djokovic edged Querrey.
