![Oliver Kirk, American boxer and two-time Olympic gold medal winner ca. 1910-1915 Stock Photo - Alamy Oliver Kirk, American boxer and two-time Olympic gold medal winner ca. 1910-1915 Stock Photo - Alamy](https://c8.alamy.com/comp/2BD4TXA/oliver-kirk-american-boxer-and-two-time-olympic-gold-medal-winner-ca-1910-1915-2BD4TXA.jpg)
Oliver Kirk, American boxer and two-time Olympic gold medal winner ca. 1910-1915 Stock Photo - Alamy
![Oliver McCall had boxing's greatest chin, beat Lennox Lewis to become champion, was never knocked down and prime Mike Tyson needed him for tough sparring sessions Oliver McCall had boxing's greatest chin, beat Lennox Lewis to become champion, was never knocked down and prime Mike Tyson needed him for tough sparring sessions](https://talksport.com/wp-content/uploads/sites/5/2022/01/NINTCHDBPICT000705935956.jpg?strip=all&quality=100&w=1080&h=972&crop=1)
Oliver McCall had boxing's greatest chin, beat Lennox Lewis to become champion, was never knocked down and prime Mike Tyson needed him for tough sparring sessions
![McCall defeats Lawrence - Heavyweight boxers Oliver McCall, left, and Franklin Lawrence battle at ... - McCall defeats Lawrence - Heavyweight boxers Oliver McCall, left, and Franklin Lawrence battle at ... -](https://media.lasvegassun.com/media/img/photos/2009/08/21/Boxing500.jpg)