Reveco's team had filed a complaint regarding the result of their memorable bout in April and those complaints have, according to the WBA, had merit enough to order this rematch under rule c.26 (which can be read in full below).
The original bout was ruled a majority win for Ioka, with scores of 116-113, 115-113 and 114-114. Some did complain about the result, with Ring TV's Diego Morilla describing the result as "controversial" (Diego's piece can be found here), whilst others, such as boxingscene's Jake Donovan, actually had the bout wider in favour of Ioka at 116-112 (Jake's piece can be found here).
Although the WBA's ruling does taint Ioka's victory we'll not complain too much given the original fight was one of the best we've seen this year and the two men did appear to be very matched.
For those who missed the bout it can be seen in full here.
(Image and rule, as seen below, courtesy of the WBA)
(Note Jake and Diego's pieces are hosted externally)
c.26. Contested Decisions.
A bout decision may be contested by a boxer if within ten (10) days of the decision the boxer submits payment of a $10,000.00 fee, and the following:
a. A concise statement by the boxer or his authorized agent setting forth the grounds on which the challenge has been brought, arguments and authority in support, and identification of other persons with a material interest likely to be affected by a decision on the challenge.
b. For the person filing the challenge, the following information:
A postal address;
An email address (if one exists); WBA RULES as Adopted at Directorate Meeting in Panama 8/8/13 13
A facsimile address;
A telephone number; and A signature of the boxer on whose behalf the challenge is filed.
c. If the challenge is signed by someone other than a boxer, a certified statement of authorization by the boxer to file the challenge. For good cause, the President may waive all or part of the fee. The Committee may request that the International Officials Committee, or a special officials committee, evaluate the fight and give their opinion and recommendations to the Committee. The Championship Committee, in its sole discretion, may order the boxers fight a rematch.