By Rick Reeno has been advised that Ivan Calderon vs. Jhonreil Casimero is heading to a purse bid on March 2 at the WBO's office in Puerto Rico at 10am. The bidding will start at $80,000. Casimero is Calderon's mandatory to the junior flyweight title. On the same day, the purse bid takes place for WBO interim-lightweight champion Michael Katsidis vs. mandatory Kevin Mitchell.