The Sox have announced ‘Thanks, Tek Day” to honor retired catcher and captain Jason Varitek.

The pregame ceremony on July 21 will take place at Fenway at 6:30 p.m., before the Sox face the Blue Jays at 7:10.

Varitek, who spent 15 seasons with the Sox and was the 18th captain in team history, announced his official retirement on March 1. He was the longest-tenured catcher in Boston history, earned three All-Star Game appearances, and won both the Silver Slugger and Gold Glove Awards in 2005, one season after he helped lead the Sox to a World Series title.