Celtics 7 hours ago Celtics celebrate Banner 18 as they open NBA season against Knicks The Boston Celtics will raise Banner 18 at the TD Garden as the pursuit for Banner 19 begins. US & World Videos 6:15 Celtics start season by raising Banner 18, blowing out Knicks 2:18 Hanson says Trump water tower dispute has cost taxpayers $3,600 2:10 Officials say plane's engine caused fire at Logan Airport 2:18 Owners of historic Concord road fight to keep land private 2:57 Celtics fans gather at Boston City Hall Plaza for watch party