"Because Serena's gone, and Henin's out, the women's side is ... open for taking," said CBS analyst John McEnroe, who won seven Grand Slam titles. "Kim has positioned herself well in terms of what she needs to do to defend her title."
Clijsters has 14-match winning streak at US Open →
The younger brother of seven-time Grand Slam champion John McEnroe said he wanted to dedicate his time to his family and his other jobs.
Patrick McEnroe resigns as US Davis Cup captain →