 Baltimore, Maryland--Newsfile Corp. - December 24, 2020 - Slinger Bag OTCQB: SLBG, a sports brand focused on innovating game improvement equipment for ball sports and an artificial intelligence analytics platform with an initial business focus on the global tennis market is pleased to announce its successful uplisting from the OTC Pink to the OTCQB Venture Market. The up listing is effective as of the open of trading on December 24, 2020.The OTCQB Venture Market is... 