Kelly and Hall were mandatories. Grant and Harmon were just tick overs between more important fights and trying to negotiate for a Dariusz fight. Also, Roy fighting Harmon was amusing in the saga with Dariusz. Dariusz was interviewed before Roy’s fight with Harmon, and the interviewer asked him if he was going to watch. And he said “I’ve zero interest in watching Roy fight a lowly guy like that” Why was that amusing? Because 2 years later, Dariusz himself fought Harmon.
Hall wasn’t regarded as a terrible defence by Roy. Kelly certainly was though. HBO were happy with the Harmon fight. Also, you need to go back and look at who Dariusz fought.