Costa Rican Goalkeeper Keylor Navas Trains by Saving Tennis Balls Hit by Pro

Costa Rica has been the Cinderella story of the 2014 FIFA World Cup. Few game them a chance to even get out of the group stage, but they overcame England, Italy and Uruguay to win the group and are now in the Quarterfinals.

A lot of the credit of the Costa Rican success has to go to goalkeeper Keylor Navas.

Navas has been able to be so successful thanks to his training technique: Saving hard-hit tennis balls hit by pro tennis player Pablo Andujar.