The term 'Sixers, On a Scoreboard' can be solved by the three-letter acronym PHI. PHI is an abbreviation for the Philadelphia 76ers, a professional basketball team based in Philadelphia, Pennsylvania. The 76ers compete in the National Basketball Association (NBA) and are one of the oldest franchises in the league. The team's name is derived from the state's nickname, the 'Keystone State, ' which is also known as the 'Sixers State.'