Browns' Alex Mack is surprisingly active

Browns center Alex Mack's commitment and durability have to be commended.

He is active for today's game at Oakland only 13 days after having an appendectomy. In comparison, Ravens guard Ben Grubbs is going to miss four games with a toe injury.

Mack has never missed a game or snap in his now 37-game career. It's an amazing feat for Mack to return so quickly. His first practice back was just Friday.

The Browns, though, will have to play without cornerback Joe Haden. He will miss his first game of the season with a sprained knee.