Mark Clayton is a former American football wide receiver who played most of his career with the Miami Dolphins. A favorite target of Dan Marino, he paired with Mark Duper to form the popular "Marks Brothers". He was a five time Pro Bowl player and scored 85 total touchdowns. In 2003, he entered the Miami Dolphins Ring of Honor. Mark Clayton has hand signed this Miami Dolphins 8x10 Photo. Certificate of Authenticity Collectibles.