The Facts: Following up on a previous item. ... Per a source with knowledge of the situation, Johnson will undergo an MRi today to determine the severity of his injured hamstring.

Diehards Line:Though it initially appeared to be a knee injury, Johnson left Sunday’s game against the Steelers with a hamstring injury. He did not return to the game, but sources tell PFT's Mike Florio that Johnson is able to walk despite the injury. ... Stay tuned. More as further details come to light.