Vasili Mallios is moving up the ladder quickly in the word of high school basketball officiating.
Mallios earned the coveted assignment of serving as a referee in the Division 3 state semifinal game between Watertown and Cardinal Spellman Tuesday at the TD Garden.
Mallios also refereed the St. Maryâ€™s-Hamilton-Wenham North sectional semifinal before a packed house at St. Johnâ€™s Prep.
Refereeing assignments in the State Tournament are awarded following an evaluation process by coaches in the various leagues. Mallios has become a highly respected varsity-level referee in a short period of time.
â€œI think Vasili is one of the promising and up and coming young officials on our board,â€ said Paul Halloran, past president of IAABO Board 130 in northeastern Massachusetts. â€œHe has a great future and itâ€™s great for him to get this opportunity to referee at the Garden. Iâ€™m really happy for him.â€