John McEnroe says Nick Kyrgios "could do some really good things" if he confronts one aspect of the mental game.
"The chances of coming back are very high," says Serena Williams.
The American hits a career-high No.3 ranking on Monday.
The American pair notch a milestone by reaching the top five.
U.S. Davis Cup captain Mardy Fish names American team for Davis Cup Finals November 22-27 in Malaga, Spain.
The Canadian is picking up the pace this month.
The Russian will take his place in the Erste Bank Open draw for the second time.
