Team: Los Angeles Raiders
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McCallum was a tremendous athlete and a two-time All-American at Navy, but his required service meant that he was only able to play the 1986 season with the Los Angeles Raiders before going on full-time duty. He returned as a backup in 1990. During the 1994 season opener against the 49ers, linebacker Ken Norton, Jr. twisted McCallum down so violently that when McCallum's cleat caught in the ground he ruptured an artery, tore three ligaments, suffered nerve damage, and completely ripped the calf and hamstring muscles off the bone. Doctors told him he was lucky to have his leg saved at all, and McCallum never played another down in the NFL.