Miami Dolphins defensive tackle Zach Sieler out with season-ending injury

Miami Dolphins defensive tackle Zach Sieler is out with a season-ending injury, CBS News Miami's Mike Cugno has confirmed.The 31-year-old reportedly ruptured his biceps during Sunday's game and kept playing with the injury.Sieler is now expected to undergo season-ending surgery, which may require five to six months of recovery time.Sieler has 24 tackles, seven tackles for loss and two sacks this season, which is his eighth in Miami. He is the only player older than 30 on Miami's roster, which is the youngest in the NFL, and first-year coach Jeff Hafley has praised his leadership throughout the season."It's valuable to me. It's valuable to our young players," Hafley said in October. "To have a guy like that around the youth of this team and having a guy that I can lean on, because not only does he do all that, but he's one of the best people ever. There's not a much better person out there than Zach Sieler."