Thomas was signed to a four-year contract extension worth $14 million in March of 2013.
Can confirm, per source, #colts Donald Thomas re-tore right quad
— Mike Chappell (@mchappell51) July 31, 2014
Losing Thomas, who was projected to be the Colts starter at left guard, will have an impact on the teams run game. It now means that secound-round pick Jack Mewhort will have to jump into the teams plans this season.