Horford notches first triple-double as a Celtic, helping hosts hold on: Al Horford posted his first triple-double as a Celtic on Monday night, leading the way for the hosts who hung on for a 110-105 victory despite nearly blowing a 23-point first quarter lead. Horford posted 19 points, 11 rebounds and 10 assists while Kyrie Irving added a team-high 25 points in what was largely an uninspiring win for the Celtics after outscoring the Heat 36-17 in the first quarter. Slowly but surely, the Heat chipped away at the deficit for the remainder of the evening behind the hot shooting of Goran Dragic (team-high 30 points) and some 2-3 zone defense that gave Boston's second unit offense fits at times. However, some big buckets from Irving and Jayson Tatum (19 points) in the fourth quarter enabled Boston to hold on and stay even with the Pacers in the race for the No. 4 seed with four games remaining.