Veteran tennis stars Roger Federer and Rafael Nadal have advanced to the quarterfinals of Miami Open tournament on Wednesday. Federer defeated Bautista Agut of Spain 7-6 (5), 7-6 (4), while Nadal won against France’s Nicolas Mahut 6-4, 7-6 (4) in the round of 16. Notably, Stan Wawrinka of Switzerland was outclassed 6-4, 2-6, 1-6 by Alexander Zverev of Germany.