Dominic Thiem (L) of Austria serves the ball to Rafael Nadal of Sapin during their third round match at the Monte-Carlo Rolex Masters tournament in Roquebrune Cap Martin, France, 14 April 2016. EPA/SEBASTIEN NOGIER

Rafael Nadal of Sapin serves the ball to Dominic Thiem of Austria during their third round match at the Monte-Carlo Rolex Masters tournament in Roquebrune Cap Martin, France, 14 April 2016. EPA/SEBASTIEN NOGIER

Rafael Nadal of Sapin returns the ball to Dominic Thiem of Austria during their third round match at the Monte-Carlo Rolex Masters tournament in Roquebrune Cap Martin, France, 14 April 2016. EPA/SEBASTIEN NOGIER

Rafael Nadal of Spain returns the ball to Dominic Thiem of Austria during their third round match at the Monte-Carlo Rolex Masters tournament in Roquebrune Cap Martin, France, 14 April 2016. EPA/SEBASTIEN NOGIER

Rafael Nadal of Spain returns the ball to Dominic Thiem of Austria during their third round match at the Monte-Carlo Rolex Masters tournament in Roquebrune Cap Martin, France, 14 April 2016. EPA/SEBASTIEN NOGIER