Carlos Alcaraz showed no sign of being hampered by an ankle injury as he beat Belgium’s Zizou Bergs 6-4, 6-3 on Saturday to reach the Japan Open quarterfinals. The world number one hurt himself two days earlier in his opening match in Tokyo, crumpling to the ground before playing on with his ankle heavily strapped, reports Sportstar. Alcaraz got the job done in an hour and 20 minutes and will face American Brandon Nakashima in the next round on Sunday. He raced into an early lead in the second set but Bergs made him work hard for the victory with a gritty performance. Alcaraz sealed the deal with a thumping forehand at the net that Bergs could not return into play.