LaDainian Tomlinson and Christian McCaffrey are star running backs. Born 17 years apart, they never played at the same time but both broke records in college and in the NFL. McCaffrey is a touchdown-scoring machine for the San Francisco 49ers. Tomlinson ranks second in NFL career rushing touchdowns. Their ability to run the field while also catching passes makes them great football players. But who would win if they faced each other?