Stacy Robinson, a wide receiver who won two Super Bowls with the Giants before working with the players union, has died. He was 50. Giants co-owner John Mara announced the death Tuesday. The place of death was not given. Robinson learned he had multiple myeloma, a cancer of the blood, in 2009, according to a family statement. He underwent a bone-marrow transplant provided by his son Stacy and had entered hospice care.