Australian Open champion Stanislas Wawrinka acknowledges that Switzerland has its best chance in years to win a first Davis Cup title. ''We all know that we have a good opportunity, especially since Roger is playing and I am playing,'' Wawrinka said on Tuesday, ahead of a home quarterfinal against Kazakhstan. The tie opens on Friday in Geneva on an indoor hard-court, with Wawrinka ranked No. 3 and Roger Federer rising again to No. 4. Kazakhstan's best-ranked player is No. 56 Mikhail Kukushkin. More...