LYON, France — The latest attempt at a women’s professional soccer league in the United States begins this weekend, so the stars of the American team from the London Olympics have, for the most part, returned to preaching the gospel stateside. Abby Wambach, the powerful striker, is with a team in Rochester; Alex Morgan, the pixieish, pink-headband-wearing poster girl, is in Portland, Ore.; and Hope Solo, the mercurial goalkeeper and “Dancing With the Stars” alumna, would be in Seattle were it not for a wrist injury. But Megan Rapinoe is not with them. In truth, this is not unusual: she has always been the different one. She plays a position (midfielder) that is more about making others look good. She has never had an endorsement deal with a skin care line (Solo) nor a desire to pose in body paint (Morgan). And she is, after a matter-of-fact announcement last summer, one of the few prominent athletes to come out as gay while in the prime of her career.