The possibility of Claressa Shields fighting Laila Ali has been floating around for some time, and Shields is publicly pressuring the retired boxer, saying that her late legendary father, Muhammad Ali, would never duck the smoke like her. Source: Scott Legato/ Paras Griffin Claressa Shields has long been considered one of the greatest boxers of her generation, holding undisputed championships in two weight classes and winning two Olympic gold medals. Her undefeated record makes a face-off with Laila Ali, a retired legend with her own perfect 24-0 record, the ultimate fantasy for fans.