Mason Morelli is an American professional ice hockey center for the Henderson Silver Knights of the American Hockey League (AHL) as a prospect to the Vegas Golden Knights of the National Hockey League (NHL). After playing junior ice hockey with the Minot Minotauros of the North American Hockey League (NAHL) and Fargo Force of the United States Hockey League (USHL), Morelli went undrafted into the NHL, and subsequently played four years of college ice hockey at the University of Nebraska Omaha. After his time in Omaha, he spent several seasons in the minor leagues, signing his first professional contract with the Stockton Heat of the American Hockey League (AHL) in 2019, followed by periods in the ECHL with the Kansas City Mavericks and South Carolina Stingrays. After winning the Calder Cup with the Hershey Bears in 2023, Morelli signed his first NHL contract with Vegas in July 2023, and made his NHL debut for the Golden Knights in February 2024. Having scored both his first goal and first assist in his first game, Morelli is the first player in Golden Knights franchise history to record a multi-point game in his debut.

The Vegas Golden Knights are a professional ice hockey team based in the Las Vegas metropolitan area. The Golden Knights compete in the National Hockey League (NHL) as a member of the Pacific Division in the Western Conference. Founded in 2017 as an expansion team, the team is the first major sports franchise to represent Las Vegas. The franchise is owned by Black Knight Sports and Entertainment, a consortium led by Bill Foley and the Maloof family. Their home games are played at T-Mobile Arena on the Las Vegas Strip in Paradise, Nevada.