Singleton broke the fifth metatarsal in his right foot at the Senior Bowl, so the team has had to slowly add more to the rookie running back’s workload over the last few weeks. He reportedly worked more on Tuesday than he has at any point this offseason. That said, Titans coach Robert Saleh spoke with the media on Thursday and referred to RBs Tony Pollard and Tyjae Spears as “the bellcows.” He adds that Singleton is big, fast and “learning it all,” but he must “compete his way” into the running back group.