The worst fears were realized for Colts guard Donald Thomas.
A league source tells PFT that he indeed tore his quadriceps in practice yesterday, and will need surgery.
The same injury cost Thomas the last 14 games of last season. The Colts signed him to a four-year, $14 million deal last offseason.
He’s out indefinitely now, and most likely for the entire season. That will likely push rookie Jack Mewhort into a larger role.