Eric Dickerson holds the record for the most rushing yards in a single NFL season. Andrew D. Bernstein/Getty Images Eric Dickerson ran for an NFL single-season record 2,105 yards in 1984.

NFL rules state teams cannot play in alternate jerseys in the playoffs, which rules out the Lions' popular new black uniforms. "Optional uniforms (e.g., Alternate, Classic, Color Rush) may not be ...

NFL expert Marlowe Alter notes that the NFL postseason manual states, “Optional uniforms (e.g., Alternate, Classic, Color Rush) may not be worn in the postseason. This is inclusive of optional ...