Kathy Duva inherited Main Events from her husband, Dan, and ran it into the ground to the point where they got rid of all their offices and let go of basically all their fighters, until she got her hands on Kovalev. And he's propped them up for the last handful of years. I don't think a boxing promotional company the size of Top Rank has ever been successfully handed down to someone else. Can't think of any. Cedric Kushner. Don King. Dan Duva. Butch Lewis. Bob Arum is the last of his era.
I didn't think centenarian Jews were your type and Bob probably hasn't properly nutted since the Clinton administration, but hey.