Dominic Thiem stuns Stanislas Wawrinka at Madrid Open as Roger Federer pulls out

Australian Open champion Stanislas Wawrinka suffered a shock defeat to Austrian qualifier Dominic Thiem at the Madrid Masters on Tuesday as his compatriot Roger Federer withdrew to attend the birth of his second set of twins.

A finalist in Madrid last year, Wawrinka seemed on course for a routine win after romping through the first set, but Thiem levelled with some excellent tennis in the second before sealing the biggest win of his career 1-6, 6-2, 6-4 with the only break of serve in the third set.

Wawrinka’s defeat means Rafael Nadal is the only top four seed left in the draw before he even starts his campaign on Wednesday as Federer joined Novak Djokovic in withdrawing from the tournament.

Federer announced on Tuesday evening that his wife Mirka had given birth to the couple’s second set of twins, this time boys named Leo and Lenny.

“Mirka and I are so incredibly happy to share that Leo and Lenny were born this evening! Twins again... miracle!” Federer wrote on his official Facebook page.

The 17-time grand slam champion’s withdrawal could benefit Andy Murray as the Scot is now the highest seeded player left in the second quarter of the draw.

There is still plenty of star power on show in the women’s Madrid Open as Li Na and Maria Sharapova were victorious.