Jason Kelce grades as the best run blocking center for second straight year

Bill Streicher-USA TODAY SportsBecoming a fan favorite in Philadelphia is more than epic speeches, crop tops and pouring stiff. It’s not that those factors don’t play a role, but you have to get it done on the field too. For Jason Kelce, that hasn’t been a problem. Despite his well-rounded game, there’s been one area where he’s been particularly dominant.

For the second year in a row, Kelce has graded out as the best run blocking center in NFL. Pro Football Focus has also credited him with a top tier “run block success percentage” for the second year running. First, how is that calculated?

“All players on any given play are awarded a PFF grade on a scale of -2 to +2. Run-block success…