Not sure what the old record was, but Boston has set the record for most made three pointers over a 15-game stretch with 287. They are averaging 19.1 made threes a game (league average is 13.4). They have made 2.6 more 3P per game compared to last year. By comparison, the 1987-88 Celtics led the league in made three pointers that season. They made 271.
Between last year and this year, they are 20-0 when making 20 3P. Going back 5 seasons, they are 45-5.
RUINING THE GAME!!!
Everyone loved it when it was the Splash Brothers. Now that its JT, JB, White, Holiday, Horford, PP, Hauser & (soon to be) KP, people think it is a fluke or bad basketball.
I think the underrated/unheralded person through all of this is Joe Mazzulla. Guy is a savant and his press conferences are consistently the most intentionally funny events around. I've never seen a more focused and driven human in my life.