In a way, it was a bittersweet experience for the crowd that eagerly awaited Nathaniel Wood ’s turn in the cage at The O2 in London. Sure, they got to cheer as the local product violently confirmed his 135-pound reign. But they didn’t even get a full minute of action out of the champion, courtesy of a thunderous left hand. Wood (13-3) met Lucas Iovine (12-2) in the final bout of Cage Warriors’ 12-fight “Super Saturday” event, which featured two separate main cards and three title fights