The Dolphins will reportedly be without one of their top defensive players for the rest of the season.

Adam Schefter of ESPN reports that defensive tackle Zach Sieler tore his biceps early in Sunday’s loss to the Lions. He was able to play the rest of the game, but needs to have surgery that will end his season.

Sieler started the first eight games of the season for the Dolphins. He had 24 tackles and two sacks in those appearances. He joined the team during the 2019 season and has 377 tackles, 37.5 sacks, two interceptions, five forced fumbles and six fumble recoveries during his time in Miami.

Sieler signed a three-year extension with the Dolphins ahead of the 2025 season. The deal ties him to the team through the 2029 season with cap hits of more than $20 million each year.