On March 23, 1997, Mark wrestled again for the World Championship. He wrestled Sid Vicious at the WrestleMania 13 in Chicago, Illinois. But late in the match, Bret Hart ran into the ring to help Mark. Mark then used a Tombstone Piledriver to pin Sid Vicious. Mark became the WWF World Champion for the second time. And this time, he was the fans' hero instead of a heel. Mark kept the title for more than months.