https://yestino.com/entities/to-boston-celtics-2e0fd9Every event involving To Boston Celticsenhttps://yestino.com/events/to-boston-celtics-coach-joe-mazzulla-the-only-nba-constant-i-d84129https://yestino.com/events/to-boston-celtics-coach-joe-mazzulla-the-only-nba-constant-i-d84129Mon, 12 Oct 2026 21:01:43 GMT"Your team is going to change, and you have to be aware of those changes and build your system around what your team looks like," said Mazzulla. Sources: Yahoo Sports