Rich Froning's work ethic and faith fuel his climb to the top of the world in grueling CrossFit competitions

Rich Froning has evolved from 120-pound high school infielder to nearly 200-pound sculpted athlete. Froning has won three straight CrossFit world championships, a sport that puts qualifiers through four days of multiple events that test strength, agility and endurance. My story on Froning for ESPN.com's Endurance Sports section: http://espn.go.com/sports/endurance/story/_/id/9748178/endurance-sports-faith-drives-three-crossfit-champion-rich-froning