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Nowadays the subject of competitive balance in sport events is getting huge attention in world economic science. CB in sport means what team will win in a competition. In this research the status of CB in Iran’s football pro league is studied. It’s obvious that if Football league in terms of economic is supposed to be dynamic and alive in economic area, they must follow a suitable of CB. Data gathering from Iran’s football league organization for 1380-1388 and using economic indices include, (C5ICB) and (HICB), CB was estimated. Results showed that CB has been passing through an improvement road. Indices decline shows unpredictability of matches results. Also Iran’s football league had the worst CB in 1383 and the best one in 1386. According to results it’s recommended that there should be suitable alternatives for retaining CB status in football league like setting special regulation for player's transportation so football industry could take advantage from revenue making and attracting sponsors.