Jack Sock says his improving his backhand is a matter of trust.

World No. 25 drops coach Sam Sumyk; Bouchard has won just two of her last 13 matches.

"Tennis starts for me at the moment when it's five-all or six-all," 18-year-year-old German says.

Recently married couple expecting first child in February.

Behind-the-scenes video of Martina Hingis' video shoot for the Hall of Fame.

Top American Says It's "Tough" Missing Winston-Salem Open.

What do you do when on-court coaching goes all-out crazy? Why, you tune in, of course.