Complex sentence: Backlund's second reign as WWF World Heavyweight Champion was brief, as he lost the title three days later to Diesel at a non-televised show in Madison Square Garden, the site of many of Backlund's victories in the 1970s and 1980s.
Split into simpler sentences: Backlund's second reign as WWF World Heavyweight Champion was brief. He lost the title three days later to Diesel at a non-televised show in Madison Square Garden, the site of many of Backlund's victories in the 1970s and 1980s.