The Indianapolis Colts kept Mark Glowinski from becoming a free agent, signing the guard to a contract extension Tuesday. A source told ESPN's Adam Schefter that the three-year deal is worth $18 million.
Glowinski, who was claimed off waivers from the Seattle Seahawks in 2017, started nine of the 11 games in which he saw action for the Colts in 2018. He became the starting right guard in early October after Matt Slauson sustained a season-ending back injury.
With Glowinski re-signed, all five starters on the Colts' offensive line are under contract for the 2019 season. He was the team's only regular starter not signed through next season.
The Colts' offensive line allowed just 18 sacks this season -- fewest in the NFL. Quarterback Andrew Luck went 239 pass attempts this season without being sacked -- the third-longest stretch in NFL history.
Indianapolis' offense ranked seventh in yards per game (386.2) and sixth in passing yards (278.8).
The Associated Press contributed to this report.