Having defied age and the odds, former world No. 4 Kimiko Date admitted Thursday it was time to do one thing she is not used to doing: quit."I wouldn't quit if I didn't have to," said Date, who is drawing the curtain on a tennis career that spanned almost 17 years, including the seven years before her first retirement."There's a part of me that says I shouldn't go on, and another part of me that says I might still have a chance. But I've always given 100 percent like any athlete should, and I have no regrets."Date recently announced she will make her final appearance in next week's Japan Wo…READ FULL ARTICLE