Japanese star Kei Nishikori returned to action Monday while still on the road to recovery from elbow surgery, joining a group of fellow top tennis professionals in contesting the Madrid Open Virtual Pro, a video game version of the clay-court tournament.With the pro tennis tours on hold because of the coronavirus, Nishikori is among 16 men and 16 women who have swapped tennis rackets for PlayStation 4 controllers to play for the Madrid Open Virtual Pro titles this week.After losing 3-0 to Greece's Stefanos Tsitsipas, the reigning Nitto ATP Finals champion, Nishikori found success in a digit…READ FULL ARTICLE