After the Miami Dolphins fell to the Detroit Lions 19-9 on Sunday at Hard Rock Stadium, they started their preparations for Week 10 with two captains dealing with injuries, and now we know they'll both miss time.

On Tuesday, the Dolphins announced that they've placed quarterback Malik Willis and defensive lineman Zach Sieler on injured reserve.

Willis, 27, joined the Dolphins on a three-year deal this offseason, and he's struggled through the first eight weeks of the season, completing 58.2% of his passes for 1,396 yards, six touchdowns and six interceptions. He's also rushed for an additional 232 yards and three scores. However, a groin injury has kept him from using his legs over the last two weeks, and it's what ultimately lands him on injured reserve.

Sieler, 31, ruptured his biceps on the first play against the Lions on Sunday but stayed in for the rest of the game. This injury ends his season, and he finishes with 24 tackles, five quarterback hits and two sacks.