Race car driver Ryan Reed; Olympic athletes reminisce; golfer Stacy Lewis.
Eric Jones; Olympic sprinters share tips; Doc Emrick; Justin Timberlake helps a junior golfer.
Aric Almirola; Jason Day; Auston Matthews; U.S. Wheelchair Rugby team.
Race car pit crews; Greg Olsen; Si Ri Pak; Kerri Walsh Jennings; April Ross.
Jimmie Johnson; swim team; Martin Kaymer; retired Marine captain becomes a Paralympic team captain.
Race car driver Kyle Busch; wrestler Dan Gable; golfer Charlie Beljan; horses prepare for races.
Professional football player Von Miller; race car driver Kevin Harvick; golfer Michelle Wie.
Football player and opera singer Justin Tucker; sprinter David Brown; dog sledding; golfer Lydia Ko.
Christian McCaffrey; Olympian is inspired by his brother, who has cerebral palsy.
United States veterans form an ice hockey team; skier Julia Mancuso; golfer Bubba Watson.
Russian ballet influences figure skaters; golfer Kyle Stanley; snowboarder Jamie Anderson.
Vincent Jackson gives back to military families; Justin Rose honors his father; Olympic curling.