The Facts: The Colts backfield is an intriguing mix led by the elder statesman (34-year old Gore), the versatile veteran (Robert Turbin), the rapid rookie (Marlon Mack) and the journeyman looking to finally make it (Christine Michael). We're expecting Gore to remain the workhorse, if you consider 16-18 carries per game workhorse level.

Diehards Line: As CBS4Indy.com's Mike Chappell notes, Gore can join John Riggins and John Henry Johnson as the only players to rush for at least 1,000 yards at 34 or older. The wildcard in Gore’s pursuit is whether OC Rob Chudzinski offers an expanded role to Turbin, who would embrace it. “He had a helluva spring,’’ Chudzinski said. Also, Mack could steal some of Gore’s carries if he proves himself NFL-ready. Mack would offer big-play burst in the ground game that’s been sorely missing. In two seasons with the Colts, Gore has 523 carries, but only six have gained more than 20 yards. The only two times in his 12-year career he’s averaged less than 4 yards per carry? In 2016 (3.9) and ’15 (3.7).