For those Mets fans who are unfamiliar with why it is called Shea Stadium, I strongly suggest you do some reading about this man.

The Mets will recognize William A. Shea in a pre-game, on-field ceremony prior to the final Opening Day at Shea Stadium, during which the Shea family will unveil the Shea name above the left-field wall.

According to a team press release, “The circular logo with the name “Shea” will be located alongside the only retired numbers in the 45 seasons of Shea Stadium,” while Bill Shea Jr. will throw out the ceremonial first pitch of the season.
Very classy gesture on the Mets part, this way he won't be forgotten when they tear down Shea Stadium.