Ever since Olympic triathlon champ Gwen Jorgsensen announced she's going to become a pro runner, we've been fascinated by her journey.
Last week, Olympic long jump champ Greg Rutherford announced he'll be retiring from track at the end of the year and trying to make a go of it as a pro cyclist. This quest has us very intrigued as well (We guess the biggest difference between the two is Rutherford hasn't announced his goal is a Tour de France victory).
Who will be more successful in their second acts? Has anyone become a successful pro cyclist at age 31?