Speed meets spin in this epic cross-sport challenge! What happens when a professional baseball player faces off against a ...

Think defensively and don’t take a huge wind up since the first serve will give you enough power to just send back over the net.

Serena's power serve is one of the fastest in the game, averaging 170 kilometers per hour. That's about 12 kilometers per hour faster than the average female professional tennis player.

Novak Djokovic rediscovers his mojo and Jessica Pegula rises - the latest edition of our weekly tennis round-up.