Foreman made his name in the 1970s. He came back to boxing in 1987 and pulled off something amazing. In 1994, at 45 years old, he knocked out Michael Moorer to become the oldest heavyweight world champion ever.
Lewis started his pro career in 1989 and won his first 25 fights. He hit a bump in the road when Oliver McCall beat him in 1994. But Lewis bounced back. He got revenge on McCall and won back the WBC belt. Then he fought Evander Holyfield and became the undisputed champion.
Lewis lost to Hasim Rahman but turned it around in the rematch. After that win, Foreman started singing Lewis' praises.
"There was a time when we used to talk about Jack Dempsey, Joe Louis, Muhammad Ali. and very seldom another name would come in there. Now you can put Lennox Lewis in that mix. He's in there with the all-time heavyweight champions of the world. Recovered the title, did it in a devastating manner. He's beating everybody, even Evander Holyfield. He became a three-time world champion and he beat a three-time champion along the way."
But Foreman went even further after Lewis stopped Mike Tyson in the eighth round.
"There's nobody in the world that can take that from Lennox Lewis now. There's no doubt that he's the best heavyweight of all time. What he's done clearly puts him on top of the heap."
Both Foreman and Lewis still give their thoughts on today's heavyweight boxers. Right now, Oleksandr Usyk's trying to put his name among the all-time greats.