Spanish UFC champion Ilia Topuria is throwing his hat in the ring for a fight against Undisputed Super Middleweight Champion Terence Crawford coming off the boxer’s historic win over Mexican icon Canelo Alvarez on Saturday night.

Nebraska’s Terence Crawford scores a career triumph in beating Canelo Alvarez—cheered on by a fellow Omahan, who stayed up late to watch at home.

With 17 weight classes in boxing and four major sanctioning bodies that bestow world titles, keeping track of who holds each of the belts can be difficult -- especially when there are sometimes multiple titlists in each organization because of interim and secondary belts.