2017 US Open Women's Singles First Round - Johanna Konta knocked out by Aleksandra Krunic Monday Aug 28,2017

Britain's Johanna Konta suffered a shock first-round defeat against unseeded Serb Aleksandra Krunic at the US Open.

Konta, seeded seventh, was among the favourites for the title and one of eight women who could have ended the tournament as world number one.

However, a first-serve percentage of just 45% allowed the clean-hitting Krunic to attack off the return, and the world number 78 fought back for a 4-6 6-3 6-4 victory.

Krunic last made waves at a Grand Slam when she came through qualifying to reach the fourth round at the 2014 US Open.

Her third-round win over then world number four Petra Kvitova was her last top-10 victory - until now.

At 5ft 4in tall, the Serb relied on the same speed of foot against Konta to set up 18 forehand winners, while her total of 36 unforced errors was six short of her surprisingly wayward opponent.