We Have witnessed more than a few Big Blue brave hearts across the decades — from Sam Huff relishing his bloodbaths with Jim Brown and Jim Taylor, to Mark Bavaro, the football Rambo, to Lawrence Taylor playing with one arm once in the Superdome, to Rich Seubert making it all the way back from a broken leg, to Harry Carson knocking heads much too often with fire-snorting Hog Redskins and battering rams like John Riggins. And Ahmad Bradshaw goes right in there with the toughest Giants who ever played the game. He won’t be remembered as the greatest running back in Giants history, only the one with the biggest heart. Wednesday was a sad day for Giants Nation — Deja Blue and Blue. More than any of the two-time champions, Ahmad Bradshaw was the Defiant Giant. His teammates liked to call him a junkyard dog. He liked to call himself a bulldog. He kept coming, like a football Smokin’ Joe Frazier, and he didn’t care about the pain in his ravaged feet or the size of the defender in his path. He never stopped running like he was trying to make the team. He ran angry, as if someone had slapped his mother. One time Brian Urlacher asked him, “Why do you run so mean? Why are you so mad?” and Bradshaw snarled, “Because I’m mad at you.” Russell Crowe would have called him a gladiator. He willed himself first into the practice field, then on the gameday gridiron, with screws in both feet to remedy a pair of cracked fifth metatarsal bones. He endured surgery to repair bone spurs in his right ankle.