Breaking up has proved a little harder to do for Daniel Nestor and Mark Knowles.

One week after capturing the French Open men's doubles title, Canada's Nestor is having second thoughts about his planned split with his longtime Bahamian partner. 

Canada's Daniel Nestor, right, and partner Mark Knowles raise the French Open trophy after winning the men's double title June 9 at the Roland Garros Stadium in Paris.
(Michel Spingler/Associated Press)

Nestor told the Canadian Press on Friday that he was rethinking the breakup — scheduled to happen after Wimbledon, which begins June 25 — and is considering keeping the partnership together until the end of the pro tennis season. 

Nestor and Knowles have played together for 13 years, winning 38 titles, including three of tennis's four Grand Slams. The only major they haven't captured is Wimbledon. 

By winning the French Open, they automatically qualified for the Tennis Masters Cup event in Shanghai, an elite tournament with plenty of prize money on the table. 

"Maybe it makes sense to finish the year in Shanghai," said Nestor, who told Knowles in May that he needed a change. "If we delayed the new partnership, almost everyone would be happy."

The only hitch in those plans would be Nestor's commitment to his new partner, Serb Nenad Zimonjic.  

Zimonjic is leaving Fabrice Santoro to pair with Nestor, so a delay might not suit his plans.

"I'm the kind of person who honours my commitments," he said. "When Zimonjic and I decided to do this, we didn't know this would happen.

"I haven't yet talked to Zimonjic and I don't know how he feels [about the delay]. Maybe he and Santoro have cut off all contact."

Nestor said last Saturday's clay court win has given the Nestor-Knowles partnership the jolt of energy it had been missing. 

"I've talked with Knowles. He's pushing this idea," said Nestor. "We're playing well now. People are wondering: `Why break up when you've won a Grand Slam?"'