The Facts: Joe McKnight, who leads the NFL in kick return average, has a hyperextended right elbow that could sideline him for the team’s next game against the Kansas City Chiefs.

Diehards Line:Rex Ryan says Monday that McKnight had an MRI exam on the elbow, but the coach wasn’t immediately certain of the results. Ryan says he doesn’t anticipate McKnight practicing Wednesday, and his status would be determined later in the week. McKnight, injured Sunday at Washington, could not bend his elbow. “Obviously if you’re a running back, you have to be able to grip the ball and protect it, so that’s something,” Ryan said. ... On a more positive note, LaDainian Tomlinson left briefly with a left knee injury when he slipped on the sideline after a tackle, but Ryan expects him to be fine.