iGaming Business – Greek gambling monopoly OPAP has reported better-than-expected results in the second quarter despite having been hit by a retroactive tax bill of €21.6 million ($28.5 million) in the period. The bill dates back to the 2010 fiscal year in which the firm had amounted tax charges of €29.6 million, with the operator having only paid €9 million of the total bill so far. After agreeing a deal with the Greek government to delay payment of the remaining balance until the second quarter of this year, OPAP must now complete full payment by the end of the quarter….