Bobby Portis and Giannis Antetokounmpo combined to score 20 straight points during a 25-0 run midway through the first half and the Milwaukee Bucks coasted to a 135-102 rout of the NBA-leading Boston Celtics on Thursday.

Portis finished with 28 points and Antetokounmpo added 24 while both players had 12 rebounds. Damian Lillard had 21 points in his return to the Bucks’ lineup after missing a 132-116 loss to Utah on Monday for personal reasons.

Milwaukee led by as many as 43 points and its 75-38 lead at the break was the fourth-biggest halftime advantage in franchise history.

Payton Pritchard scored 21 points for the Celtics, who missed 16 of their first 17 3-point attempts and finished 9 of 34 from deep. Boston was back in action after beating Minnesota in overtime on Wednesday and looked fatigued.

The Celtics allowed their highest point total of the season and dropped their second straight road game.

Giddey leads Thunder to historic rout

Josh Giddey had a triple-double and Shai Gilgeous-Alexander scored 31 points as the Oklahoma City Thunder matched the fifth-largest rout in NBA history, 139-77 over the Portland Trail Blazers.

Jalen Williams scored 21 points on 9-of-10 shooting and Giddey finished with 13 points, 12 assists and 10 rebounds for Oklahoma City, which was on the wrong end of the NBA’s biggest blowout, a 73-point loss to Memphis on Dec. 2, 2021.

The Thunder’s 62-point win shattered their previous record for victory margin of 45 points, set twice during the 2012-13 season.

Portland shot a dismal 27.7 percent from the field and suffered its second-worst loss, having fallen by 65 to Indiana on Feb. 27, 1998.

Irving’s big game lifts Mavericks

Kyrie Irving poured in a season-high 44 points and Tim Hardaway Jr. added 32 to lead the short-handed Dallas Mavericks to a 128-124 win over the New York Knicks.

Josh Green scored 18 points, the last coming on a 3-pointer with 25 seconds left to give Dallas a 124-120 lead. Irving and Hardaway combined to make four free throws in the final 11.1 seconds to seal the win.

Dallas superstar Luka Doncic sat out with an ankle injury and Dereck Lively II and Dante Exum also missed the game.

Julius Randle scored 32 points and Jalen Brunson had 30 for the Knicks, who had a five-game winning streak snapped and lost for the first time since acquiring OG Anunoby from Toronto on Dec. 30.