ATHENS — Georgia is doing nothing to diminish its reputation as Tailback U. Nick Chubb, Sony Michel and Brian Herrien are carrying the load for the Bulldogs while freshman quarterback Jacob Eason goes through some growing pains. Heading into Saturday’s Southeastern Conference game against Vanderbilt, Chubb and Michel are coming off 100-yard performances and Herrien, a freshman, nearly gave the Bulldogs (4-2, 2-2 SEC) three triple-digit rushers in last weekend’s grind-it-out victory over South Carolina. Of course, they are only the latest in a long line of storied running backs to wear the red and black, from Hershel Walker and Garrison Hearst to Terrell Davis and Todd Gurley.