The Boston Red Sox are saying goodbye to their captain.

Catcher Jason Varitek has decided to retire after 15 seasons with the Red Sox, a person familiar with the decision told The Associated Press on Monday night. The person requested anonymity because Varitek had not made an announcement.

The Boston Globe first reported Varitek’s decision.

Varitek is expected to make it official Thursday at Boston’s spring training camp in Fort Myers, Fla.

A first round draft pick in 1994, Varitek came to Boston with Derek Lowe in a trade from Seattle for Heathcliff Slocumb in 1997 and spent his entire big league career with the Red Sox. He caught four no-hitters, made three All-Star teams won two World Series titles, all the while endearing himself to the team’s demanding fan base with his unyielding work ethic and a refusal to back down.