If not Bivol who has the best footwork in boxing. I think Lomachenko used to but he's lost a step with age
Usyk has the best for me right now, to be able to move in and out and out box such a bigger man like Joshua takes great foot work. He's great on the back foot but also great when he presses and needs to cut off the ring as we saw vs Bellew. Then Loma, he's past his best, no longer can throw as much as he used too, but still has excellent ability to create angles and out position opponents. But he's always been better cutting off the ring then on the back foot. Inoue third for me, he's always been light and fast on his feet but his footwork hit another level in the Donaire rematch and again vs Fulton, showed he could out box from range the supposed bigger and superior out boxer with the use of great footwork and a great jab. Crawford then fourth for me. Great balance, great lateral movement, he had Spence falling in and overreaching leaving himself more open to his counters because of his footwork.
He's in the mix, you could argue Inoue Usyk Loma Crawford have better. I certainly think Bivol has the best defence in boxing though.