Junior flyweight world champion and pound-for-pound contender Ivan Calderon (32-0, 6 KO) will likely be returning to the ring on May 23 to take on fellow 108-pound titlist Cesar Canchila (27-1, 21 KO) in a unification bout in Puerto Rico.

This officially puts Canchila-Segura II off the table, which Top Rank had hoped to incorporate on their Tijuana Thunder pay-per-view in late March. The rumor had been that Canchila wanted a different fight, and he'll get a much better payday to take on Calderon than rematch Segura.

The fight is a good test for the 34-year old Calderon, who has been tested in recent fights, notably against Hugo Cazares on two occasions. As great a pure boxer as he is, he is going to have a harder time as he ages. I think a first career loss is probably imminent so long as he faces the top fighters, and Canchila is a rugged guy who can punch.