Del Potro, Rybarikova win titles at Citi Open in D.C.
Having not played John Isner in two years, it took Juan Martin del Potro a while to adjust to the hair-raising speed and peculiar trajectory of the 6-foot-10 American's serve.
Stepanek defeats Young, heads to final
Federer at top of game
Agassi, in final visit, savors warmth and win