Nonito Gonzales Donaire Jr. is a Filipino American professional boxer. He has held multiple world championships in four weight classes from flyweight to featherweight, and is the oldest boxer in history to win a bantamweight world title, as well as being the first three-time champion in that weight class. Donaire has also held world championships in three consecutive decades: the 2000s, 2010s and 2020s, being the sixth boxer to do so after Evander Holyfield, Manny Pacquiao, Bernard Hopkins, Erik Morales, and Floyd Mayweather Jr.

Bernard Hopkins Jr. is an American former professional boxer who competed from 1988 to 2016. He is one of the most successful boxers of the past three decades, having held multiple world championships in two weight classes, including the undisputed middleweight title from 2001 to 2005, and the lineal light heavyweight title from 2011 to 2012.