Marcus Lattimore was surprised the San Francisco 49ers drafted him given his lengthy injury history.

Lattimore never played a down in the NFL as he was unable to successfully rehab his knee.

"I mean, why would you take a running back with two horrible knee injuries?" Lattimore said, wondering about his own fourth-round draft slot in 2013. “I did pretty good, I played good in college, but if I’m a GM I don’t think I would do it."

Lattimore retired from the NFL on Nov. 5, 2014.

"I went out there and put a smile a smile on my face like everything was alright," Lattimore said about his time with the 49ers in a recent interview with SB Nation. "But it was hell. Every day."