The new energy bar is energizing the tennis community.
Haas invoked fear factor on Federer.
Hall of Famer on why "quiet please" is vital for elite players.
"I will look to play maybe a couple of exhibition events leading up to my first tournament in April," Sharapova said.
World No. 5 offers revealing answer on happiness.
The British No. 1 is now a card-carrying member of the WTA's Top 10
Two of the greatest that ever laced 'em up fall out of the Top 5.
