His 72.7 accuracy rate is the lowest in the NFL .
Garrett Hartley has missed four of his past six field goal attempts , making him just 16 - of - 22 for the season .
Garrett Hartley 's 72.7 accuracy rate is the lowest in the NFL .
Garrett Hartley has missed four of his past six field goal attempts , making him just 16 - of - 22 for the season .