Seibert made all four of his extra-point tries and both of his field-goal attempts in Sunday's 42-14 win over the Cardinals.
Seibert has been perfect since taking over for Cade York in Washington and has stayed busy on the field. The Oklahoma product was successful from 45 and 38 yards out in the win, making him 10-for-10 on FGAs this season and 9-for-9 on PATs over three games.