BOSTON -- Golden State Warriors coach Steve Kerr arrived to his pregame media session in Boston on Thursday night to find an overflow throng of media on hand for a battle of streaking NBA conference leaders. Asked about the significance of the matchup, Kerr deadpanned, "Huge game. Huge. The fate of the universe rests upon the results of tonight's Celtics-Warriors matchup." For much of the night, it kinda felt like it actually might. TD Garden buzzed with a playoff-like intensity throughout the night, including when an injured Gordon Hayward sat with assistants behind the Boston bench in the first half, drawing an ovation when he was shown on the Jumbotron, but especially as the Celtics twice rallied from double-digit deficits while pushing the defending champions for the full 48 minutes. And it was Kyrie Irving, ditching his protective face mask early in the third quarter despite playing with a facial fracture, who fearlessly attacked the basket in the...