Rafael Nadal’s astonishing 21-match unbeaten run on clay came to an end after Dominic Thiem dumped the Spaniard out of the Madrid Open in the quarter-finals, Sky Sports report.

The Austrian prevailed in straight sets 7-5 6-3 and will face South African Kevin Anderson in the semi-final after he defeated Serbian qualifier Dusan Lajovic in a three set thriller.

Nadal’s last taste of defeat on clay also came against Thiem way back in May 2017.

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Due to the defeat, Nadal will also lose his world number one spot to Roger Federer when the rankings update on Monday, along with his 50 straight sets and 21 match unbeaten runs.

Despite Federer not playing since March 24th, he will return to the top due to Nadal losing world ranking points from his win in Madrid last year.

Many are now viewing world number seven Thiem as Nadal’s closet challenger for the French Open, which gets underway later this month.