Second-seeded Alexander Zverev will play Dominik Koepfer in an all-German Acapulco semifinal. EPA-EFE/David Guzman Stefanos Tsitsipas of Greece celebrates after defeating Felix Auger-Aliassime of Canada in the Acapulco quarterfinals. EPA-EFE/David Guzman Felix Auger-Aliassime on the move in Acapulco. EPA-EFE/David GuzmanItalian qualifier Lorenzo Musetti toppled Grigor Dimitrov to reach his first ATP semifinal. EPA-EFE/David GuzmanGrigor Dimitrov of Bulgaria in action against Lorenzo Musetti of Italy during the Acapulco quarterfinals. EPA-EFE/David Guzman Nineteen-year-old Lorenzo Musetti of Italy reacts during his match against Grigor Dimitrov in Acapulco. EPA-EFE/David GuzmanThe top-seeded Tsitsipas will face Musetti in the semifinals. EPA-EFE/David GuzmanStefanos Tsitsipas in action against Felix Auger-Aliassime. EPA-EFE/David Guzman
