Adam Caplan of Scout.com reports that Pittsburgh Steelers offensive tackle Willie Colon suffered an Achilles' injury during a workout today.

Caplan adds that an MRI has been scheduled to determine the significance of Colon's injury.

A fourth-round pick (131st overall) out of Hofstra by the Steelers in 2006, the 6-3, 315-pounder from Hofstra has started 50 consecutive regular season games at right tackle for the Steelers.

Colon has also started four post-season games for the Steelers, including Super Bowl XLIII.

Due to the uncapped year, Colon was not eligible for unrestricted free agency. The Steelers tendered Colon at the "First-Round" level, which is scheduled to pay him a $2.521 million dollar base salary this season. Colon played last season under the same restricted free agent tender, earning $2.198 million dollars.