It's a question boxing fans are asking as well. The winner of Saturday's fight will hold all three of the recognized championship belts in professional boxing. It will be the first time this will have been the case since 1992.
This is the fight which can achieve that for Lewis, who's held the WBC title for the last two years. With a victory, he can silence critics who think his 34-1 record is weakened by victories over second-tier opponents.
"Only good spins off for sport when major fights like this happen," said Brophy. "This has something of the same effect and building up to the Ali-Frazier fights, where you know that at approximately 11 p.m. EST everybody will be tuned in, waiting for that opening bell."
Common opponents: As an amateur defeated Riddick Bowe to win the gold medal for Canada at the Olympic Summer Games in Seoul in 1988; won an eight-round decision over Ossie Ocasio in June 1990.
vs. Tyson: Reportedly, Tyson's people turned down $45 million to fight Lewis.
vs. Tyson: Scored a dramatic 11th-round TKO over Tyson in November of 1996 to win the WBA title; won by disqualification in the third round in an August 1997 fight where Tyson bit Holyfield's ears.