Newton 's one of the league 's toughest QBs , and has n't missed a single game in his three year career .
The timetable for hairline fractures is unclear , as it depends a lot on a person 's pain tolerance level .
Newton 's one of the league 's toughest QBs , and has n't missed a single game in his three year career .
The timetable for hairline fractures is unclear , as it depends a lot on a person 's pain tolerance level .