During a men`s singles exhibition match between Rafael Nadal and Juan Martin del Potro at BNP Paribas Showdown 2013, Nadal invited comedy actor, Ben Stiller, to play doubles tennis with them, so Del Potro looked for his partner, and came across a sweet little girl from the crowd. Before the match began, Ben Stiller jokingly threatened the little girl and said, `You` go down.` During the match, neither the players on the court nor the crowd expected that the little girl is going to show off some good skills in tennis, even better than Better Stiller. Everyone on the stadium was astonished and surprised by this.