Complex sentence: In early 1977, after suffering the broken neck and many other ailments, Sammartino informed McMahon Sr. that he was done with his second title reign, which it ended in Baltimore on April 30,1977, when he was defeated by Superstar Billy Graham.
Split into simpler sentences: In early 1977, after suffering the broken neck and many other ailments, Bruno informed McMahon Sr. that he was done with his second title reign. It ended in Baltimore on April 30,1977, when he was defeated by Superstar Billy Graham.