Ma Jae-yoon (Korean: 마재윤), known by the pseudonym sAviOr (previously IPXZerg), and dubbed "The Maestro", is a former professional South Korean e-sports gamer of the real-time strategy game StarCraft. He played the Zerg race and was one of the most successful and popular players of all time. Savior was one of several players implicated in the 2010 match fixing scandal, and as a result he was banned from KeSPA-run competition for life. After retiring as a pro-gamer, sAviOr began streaming on AfreecaTV, but AfreecaTV made the decision to ban several players implicated in match-fixing offenses from the platform, including sAviOr. Ma Jae-yoon was a member of CJ Entus, a professional StarCraft: Brood War e-sports team sponsored by CJ CGV, an entertainment subsidiary of the CJ Corporation.