The Atlanta Hawks took sole possession of the No. 3 seed in the Eastern Conference with a 118-107 win against the Boston Celtics Saturday night at Philips Arena

In a high-scoring first half, both teams shot better than 56% from the field and 52% from 3-point range, and the Celtics took a 71-67 lead into the locker room.

Boston went on a 14-5 run to take an 87-75 lead in the third quarter, but Atlanta responded with an 18-4 run to go up 93-91 at the end of the third and ended up outscoring Boston 51-36 in the second half.

Marcus Smart, who knocked down just 8 three-pointers over 14 games in the month of March, went 4-of-6 from 3-point range and scored 14 of his team-high 19 points in the first half.

Isaiah Thomas went just 6-of-19 from the field and finished with 16 points, ending his 18-game streak of scoring at least 20 points.

Paul Millsap had a season-high 31 points and 16 rebounds, Jeff Teague scored 24 points, and Kent Bazemore added 21 points for the Hawks.

Atlanta is now one game ahead of Boston and in sole possession of the No.3 seed in the Eastern Conference. The Celtics are in fourth place and just a half game ahead of both Charlotte and Miami.

The Celtics have just two opponents remaining on their regular-season schedule: Charlotte and Miami. The Hornets will come to Boston Monday night, and the Heat will visit TD Garden on Wednesday.