ESPN’s Adam Schefter reports Dolphins DT Zach Sieler (bicep) is out for the season.

Sieler, who’s played well for an underperforming Miami defense, will undergo surgery on his injured bicep and remain sidelined for the remainder of the regular season. It’s a blow to the Dolphins defense, which has allowed the league’s highest EPA per play and highest offensive success rate. This could make the Dolphins more vulnerable to the run as well. Through Week 9 they have allowed the tenth most fantasy points per game to running backs, along with the 13th highest yards per carry.