A day after his 19th birthday at the Madrid Open, he defeated 5-time Madrid champion, world No. 4 and third seed Rafael Nadal in the quarterfinals to become the first teenager to defeat him on clay.[42] The following day, he went on to beat the world No. 1 and top seed Novak Djokovic in the semifinals for his 6th straight top-10 win, and became the youngest player to win a match against a world No. 1 since 2004. He also became the first player to ever beat Djokovic and Nadal back-to-back on clay.[43][44]