“She’s phenomenal,” Joshua told Sky Sports.“I can’t even put it into words. She’s special.“Sometimes you get a few fighters that come along in this world and they’re special, and they leave a mark.“She’ll definitely be one of those people that leave a mark on the boxing industry.”On the same night, Harper defends her WBC super-featherweight title against Norway’s Katharina Thanderz, who is confident she can expose the British fighter’s technical frailties. “I’ve got to take things as they come, and this is my next challenge,” said Ball. “I’m just preparing as hard as I can for that.“There’s no point me looking any further than that. I’ve been given a great opportunity and I need to grab it with both hands. I’ll see what happens afterwards.“I am overdue a stoppage. I need to get one. I know I am going to win this fight and I’m going home with that belt. That belt is not getting on that plane! It’s mine to win.”In August, the Midlands boxer floored Shannon Courtenay in a points win and suggested that her Brit rival might have to wait for a rematch.“I’m pleased with my performance,” said Ball. “I’m very proud of myself, but I want to show more. Some people are still questioning my ability. I want to show them what I’m really about.“Shannon needs the rematch more than me. I’m not really that bothered, and that’s no disrespect to her. I just want to fight as many people as I can.”Watch Katie Taylor, Terri Harper and Rachel Ball in world title action this Saturday, from 7pm on Sky Sports.