LAHORE, March 24: The PHF has postponed the national hockey championship regional round of Hyderabad Centre which was to be held from Sunday. The reason for postponement was that the water sprinkler system was not working at the stadium, a PHF spokesman said. Earlier, the round was to be held from March 18, but it was deferred till March 26 due to some problems between the PHF and Karachi Hockey Association over the elections process.