Donald “Reche” Caldwell’s death rocked the football world on Sunday, and Tom Brady was one of many current and former players to share their reactions to the horrific news.

Caldwell, who caught passes from Brady on the New England Patriots in 2006, was shot and killed Saturday outside his home in Tampa, Fla.

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Brady took to Instagram to pay tribute to his former wide receiver with a pair of photos.

Flip the Page to see his tribute: