The image of sprightly gymnasts tumbling across a balance beam has always drawn American viewers during the Olympics, just like pictures of bikini-clad beach volleyball players going for gold. As the U.S. team heads for the Rio Olympics, the women wearing the stars and stripes are among the heavy favorites in several disciplines. Megan Guarnier and her teammates are perhaps the strongest team on the road, Kristin Armstrong is the two-time and defending time trial gold medalist, and the women's pursuit squad recently smashed the world record on the track. More...