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ACAPULCO, MEXICO - FEBRUARY 27: David Ferrer of Spain returns a ball during the match between David Ferrer of Spain and Alexander Zverev of Germany as part of the day 3 of the Telcel Mexican Open 2019 at Mextenis Stadium on February 27, 2019 in Acapulco, Mexico. (Photo by Hector Vivas/Getty Images)

ACAPULCO, MEXICO - FEBRUARY 27: David Ferrer of Spain returns a ball during the match between David Ferrer of Spain and Alexander Zverev of Germany as part of the day 3 of the Telcel Mexican Open 2019 at Mextenis Stadium on February 27, 2019 in Acapulco, Mexico. (Photo by Hector Vivas/Getty Images)