BOSTON (AP) — Paul Millsap had 17 points and eight rebounds, and the Atlanta Hawks advanced to the second round of the NBA playoffs with a 104-92 Game 6 victory over the Boston Celtics on Thursday night.

Al Horford and Kent Bazemore each added 15 points for the Hawks, who earned their first playoff series win over Boston since the St. Louis Hawks beat the Celtics in the 1958 Finals.

The Celtics last three playoff appearances have ended in first-round exits.

Coming off a 27-point win in Game 5, the Hawks took advantage of poor shooting by Boston on Thursday, building as much as a 28-point lead.

Atlanta blew the game open with a 39-point third quarter in which it shot 74 percent from the field.

The Celtics shot just 36 percent for the game. They made a final charge to get as close as 10 points, but Atlanta was able to close it out.

Isaiah Thomas led Boston with 25 points and 10 assists. Jae Crowder added 15 points.

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