Major league baseball is a professional body that manages all aspects of the highest level of professional baseball in North America. Major league baseball has been accused of practicing monopolistic actions due to the fact that it controls all rights concerning marketing, labor, television contracts, and hires and maintains baseball’s umpiring crews.Pure monopolies are companies or firms that dominate a certain market. They choose the amount to produce, the price at which they sell as well as the market sector or segment they sell to. In addition to this there are firms that are thought to be approaching a pure monopoly status. An example of such a firm is Microsoft which controls around 90% of the global software market, especially when it comes to the sale of its windows operating system. Both pure monopolies as well as firms approaching pure monopoly status should be discouraged.