The Boston Celtics get an opportunity to accomplish something no other team has done in the Steve Kerr coaching era Saturday night when they go for a season-series sweep of the Golden State Warriors in a nationally televised game. The Celtics scratched out a 92-88 home win over the Warriors in November, putting them in position to sweep the two-game season series on Saturday. The Warriors haven't lost twice to an Eastern Conference team in the same season in Kerr's 295 games as Warriors coach, dating back to the start of the 2014-15 campaign.