No Lionel Messi is a the best footballer in the world, and not the tennis player.
Former World No. 1 German female tennis player
Pete Sampras, a professional tennis player, was ranked as the world's number 1 tennis player in 1993. He held that position for nineteen consecutive weeks.
The best table tennis player in the world at the moment is Zhang Jike.
currently Roger Federer is the world's number one men's tennis player, followed by Nadal and Djokovic