Indianapolis Colts starting linebacker Tyjuan Hagler will be on the shelf for at least two months after tearing a pectoral muscle while lifting weights, according to Adam Schefter of NFL Network.

He will miss all of training camp, likely will miss all of the preseason, and could miss Week One of the regular season, a home game against the Bears.

Hagler was a fifth-round draft pick in 2005.  He appeared in twelve regular-season games and started seven of them last season.