Kozlov upsets Dimitrov, next faces Nadal at Mexican Open


              Grigor Dimitrov, of Bulgaria, returns a ball during a match against Stefan Kozlov, of the U.S., at the Mexican Open tennis tournament in Acapulco, Mexico, Monday, Feb. 21, 2022. (AP Photo/Eduardo Verdugo)
            
              Stefan Kozlov, of the U.S., returns a ball during a match against Grigor Dimitrov, of Bulgaria, at the Mexican Open tennis tournament in Acapulco, Mexico, Monday, Feb. 21, 2022. (AP Photo/Eduardo Verdugo)
Kozlov upsets Dimitrov, next faces Nadal at Mexican Open