![Heavyweight boxer Oliver McCall (C) of the U.S. celebrates his second round knockout of John Hopoate of Australia at the Orleans hotel and casino in Las Vegas, Nevada May 22, 2009. REUTERS/Las Heavyweight boxer Oliver McCall (C) of the U.S. celebrates his second round knockout of John Hopoate of Australia at the Orleans hotel and casino in Las Vegas, Nevada May 22, 2009. REUTERS/Las](https://c8.alamy.com/zooms/6/9c5adf0da88741808f9575dcb47966fe/2d2aam2.jpg)
Heavyweight boxer Oliver McCall (C) of the U.S. celebrates his second round knockout of John Hopoate of Australia at the Orleans hotel and casino in Las Vegas, Nevada May 22, 2009. REUTERS/Las
![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
![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)