Report: Browns center Alex Mack has broken leg, out for season

Cleveland Browns center Alex Mack was carted off the field in the team's game against the Pittsburgh Steelers. He will not return.

Cleveland Browns head coach Mike Pettite told reporters Sunday that the team believes center Alex Mack broke his leg in the Browns' 31-10 victory over the Pittsburgh Steelers. CBS Sports' Jason La Canfora reported Sunday night that Mack fractured his fibula in the win and is expected to miss the rest of the season.

The injury occurred in the second quarter. Mack's leg was put in an air cast before he was taken off on the cart.

Mack was drafted by the Browns in the first round of the 2009 NFL draft. In April, the Jaguars gave Mack a five-year, $42 million offer sheet, but the center re-signed with Cleveland after the Browns matched the offer. The deal reportedly has $18 million guaranteed over the first two years of the contact.

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The 28-year-old Mack has been named to two Pro Bowls, including last season. 

- Sarah Barshop