The IBF has made a major change in the rules that govern its purse bids that went into effect with the start of the new year. The split of the money if a fight went to a purse bit had been 75 percent of the winning offer to the titleholder and 25 percent to the mandatory challenger. Now the titleholder is entitled to 65 percent and the challenger 35 percent. A vacant title fight remains 50-50. Also, in the event of a titleholder versus a mandatory challenger who is No. 3 or below in the IBF rankings the split remains 85-15 in favor of the titleholder. In another change, the IBF reserves the right to alter the split if requested and it’s approved by a majority vote of the board of directors.