US Open 2015: Djokovic, Serena advance to next round; Nadal knocked out

World number one Novak Djokovic produced a near-flawless display on Friday, 4 September, to defeat Andreas Seppi in straight sets and reach the fourth round of the US Open at Flushing Meadows.

Djokovic overcame his Italian opponent 6-3, 7-5, 7-5 in a match that lasted two hours and 28 minutes. The Serbian will next face Spain's Roberto Bautista Agut in the fourth round.

Defending champion Marin Cilic edged out Kazakhstan's Mikhail Kukushkin in five sets, 6-7, 7-6, 6-3, 6-7, 6-1, to move to the next round.

In women's singles, Serena Williams came back from a set down to beat copatriot Bethanie Mattek-Sands 3-6, 7-5, 6-0. Serena's elder sister Venus too moved into the 4th round with a 6-3, 6-4 win over Swiss teenager Belinda Bencic.

In men's doubles, Steve Johnson and Sam Querrey, who in the first round ended the Bryan brothers' record of winning at least one major title every year, overcame Leander Paes and Fernando Verdasco 7-5, 4-6, 6-3 in a close 2nd round clash.

Meanwhile, 14-time Grand Slam champion Rafael Nadal squandered a two-set lead to go down 6-3, 6-4, 4-6, 3-6, 4-6 to Fabio Fognini of Italy in men's singles third round on Saturday.

(With inputs from ANI)