Derrick White had 24 points, including six 3-pointers, helping lead the charge as the Boston Celtics dominated the Miami Heat 110-97 in Game 5 on to extend the Eastern Conference finals. Marcus Smart had 23 points and five steals. Jayson Tatum and Jaylen Brown finished with 21 points apiece as the Celtics claimed their second straight win and trimmed Miami’s series lead to 3-2. It keeps alive Boston’s hopes of becoming the first team in NBA history to overcome a 3-0 deficit in a best-of-seven series. Game 6 is Saturday in Miami. Duncan Robinson led the Heat with 18 points.