Complex sentence: The youngest champion was Jeff Hardy, who won the championship at 23 years old, while the oldest champion was Ric Flair, who won the championship at Unforgiven 2005 at the age of 56.
Split into simpler sentences: The youngest champion was Jeff Hardy, who won the championship at 23 years old. The oldest champion was Ric Flair, who won the championship at Unforgiven 2005 at the age of 56.