Fresh injury blow for Sharapova

Maria Sharapova's comeback from a leg injury lasted less than three sets on Monday before she retired with a left arm problem against unseeded Barbora Strycova at the Wuhan Open.

The world number three had been out with a persistent leg injury since July, when she lost a Wimbledon semi-final to Serena Williams, and pulled out of three events including the US Open.

But the Russian's long-awaited return proved short-lived as she was pushed to two tie-breaks by the Czech Republic's Strycova before withdrawing when 2-1 up in the third.

Sharapova's retirement leaves a question mark over the rest of her season.