When Panthers quarterback Cam Newton ran for a touchdown on Thursday night against the Eagles, it was the 51st rushing touchdown of his career — an unprecedented number for a quarterback, and a pretty good number even for a running back. Since Newton entered the NFL in 2011, he’s second in the NFL among all players in rushing touchdowns. Only Marshawn Lynch, with 53 rushing touchdowns since 2011, has more. LeSean McCoy, with 49 rushing touchdowns, is next, followed by Adrian Peterson with 45. And it goes without saying that no other quarterback has been close to Newton’s rushing touchdown total since 2011: Andy Dalton, with 18 rushing touchdowns, is 33 behind Newton, but he’s second among quarterbacks since 2011.