"I have to remain very stable. I was not able to do it very often this season," says Nadal, who partners Fernando Verdasco in his Rogers Cup return today.
World No. 1 pauses practice to scrutinize the line in Montreal.
World No. 2 cites right leg injury in withdrawing from Rogers Cup.
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.
