By Andrew Both GREENSBORO, North Carolina, Aug 17 (Reuters) - With the Rio Olympics in their rear view mirror, Patrick Reed and Rickie Fowler are turning their thoughts to the Ryder Cup, the main reason they are playing the Wyndham Championship starting here on Thursday. Reed is on the borderline of qualifying for the United States team, with Fowler on the outside looking in, so now is not the time to take a week off, even after the rigours of Rio. Reed is eighth in the U.S. standings, while Fowler is 12th. More...