The world's number one tennis player Rafael Nadal had a surprise struggle in his round two match at Wimbledon. He lost the first set to his opponent Robin Haase.
Haase is a Dutch player who is ranked 151st in the world. Most people expected a straight-sets win for Nadal, but that wasn't the case at all...
Nadal fought back to take the second set 6-2, and it looked like the Spanish player was back on track.
But no, Haase played some great tennis to take the third set 6-3. It was the first time the two players had played each other.
But then Rafa showed why he's the world number one and eventually pulled out all the stops to take the next two sets. And the match.
Phew, what a relief! Rafa celebrates his win on Centre Court. He now faces Philipp Petzschner.
Robin Haase was cheered by the crowds too as they left the court, after fans were treated to a much tougher match than they were expecting.