Greenberg faced De Los Santos again in 2011, hitting a single off him as a member of the Bridgeport Bluefish in the independent Atlantic League.
The Marlins say Greenberg will donate his one-day salary — a pro-rated share of the minimum contract is $2,623 — to the team’s foundation, which will in turn donate to the Sports Legacy Institute, a group that furthers the study, treatment and prevention of the effects of brain trauma in athletes and others.
Greenberg said he’s hopeful of getting a chance to play for some club in spring training next year. He also insisted that this is not a stunt.
‘‘I'm no different or more special than anyone else,’’ Greenberg said. ‘‘It just so happened that my story was the Sunday Night Baseball game on ESPN and it was the first pitch I ever saw and I got hit in the back of the head. Tragedy for me, but it’s part of the game.’’
AP Baseball Writer Ronald Blum in New York and AP Sports Writer Charles Odum in Atlanta contributed.