Bucs re-sign starting left guard Ali Marpet to five-year extension

TAMPA, Fla. -- The Buccaneers locked up an important piece of their offensive line, signing left guard Ali Marpet to a five-year contract extension that will keep him with the club through 2023.

The deal is worth $54.125 million, with $26.8 million guaranteed, sources told ESPN, making Marpet one of the highest-paid left guards in the league.

Marpet took to Instagram on Tuesday evening to react to the extension.

Marpet is among a handful of key players in the final year of their rookie contracts, along with left tackle Donovan Smith and middle linebacker Kwon Alexander, whom the Bucs have been trying to re-sign.

Smith tweeted congratulations to his teammate:

Alexander also tweeted congratulations to Marpet.

A second-round draft pick out of Division III Hobart College, Marpet became a day one starter at right guard. He shifted to center and then left guard, starting 44 games over the past 3ΒΌ seasons.

The Bucs became enamored with Marpet at the Senior Bowl, which prompted them to make him the first Division III player selected in the second round of the NFL draft.

Marpet has drawn praise from the Bucs' brass for his physicality, versatility, consistency, intelligence and communication skills. He has served as a captain, and he and Smith even assisted in the recruiting of center Ryan Jensen as a free agent.

ESPN's Adam Schefter contributed to this report.