is reportedly not guaranteed to remain the ' starting quarterback this season if he doesn't start to improve.
Fox insider Jay Glazer said Sunday that while his leash isn't so short that he will be pulled after one mistake, Newton's leash isn't so long that head coach Bill Belichick will keep him in the lineup if he continues to play the way he has been:
Newton has thrown no touchdown passes and five interceptions in his past two games, and Glazer noted that those within the Patriots organization are "concerned" about the number of errors he has been making.