BOSTON (AP) — Giannis Antetokounmpo had his second career postseason triple-double, scoring 24 points with 13 rebounds and 12 assists on Sunday to lead the Milwaukee Bucks to a 101-89 victory over the Boston Celtics in Game 1 of their second-round playoff series.

Jrue Holiday had 25 points and 10 rebounds for the defending NBA champions, and Bobby Portis had 15 points and 11 boards to help the Bucks swipe the home-court advantage in the best-of-seven series.

Game 2 is Tuesday night in Boston.

Jayson Tatum scored 21 points and Jaylen Brown had 12, but the two Boston stars combined to shoot 10 for 31 in the game. Al Horford added 12 points and 10 rebounds for the Celtics.

After shutting down Kevin Durant and Kyrie Irving in a four-game sweep of the Brooklyn Nets, Boston couldn’t stop Antetokounmpo -- even with Defensive Player of the Year Marcus Smart shaking off a shoulder injury.

The two-time NBA MVP scored eight straight Milwaukee points at the end of the first half to take a double-digit lead into the break. Boston was within seven in the final minute of the third quarter before going without a bucket for more than four minutes while the Bucks scored 11 of the next 14 points to open a 17-point lead.

Boston won 26 of its last 32 games in the regular season and was the only team to sweep its first-round playoff series. Milwaukee advanced by beating the Bulls in five games.

The Celtics led by as many as eight before Milwaukee scored the last 10 points of the first quarter. Antetokounmpo scored the last six of the half to give the Bucks a 56-46 lead at the break.

THAT SMARTS

Smart scurried off the floor with 1:12 left in the first half, in obvious pain with his right arm dangling limply beside him, after taking a swipe from Jevon Carter in the lane.

The team said during halftime that Smart had a shoulder “stinger” and a right quad bruise. He received a big cheer when he came out of the tunnel for the start of the second half, and finished with 10 points and six assists in 33 minutes.

Midway through the third quarter, Robert Williams III went down at midcourt after taking a hit to the groin. He went to the tunnel but returned after the timeout.

TIP-INS

The Bucks were without Khris Middleton, who is expected to miss at least two games with a sprained medical collateral ligament in his left knee. George Hill also sat out with an abdominal strain. ... Celtics coach Ime Udoka successfully challenged a third-quarter foul call against Grant Williams when Grayson Allen sprawled to the floor after a 3-point attempt. ... Antetokounmpo shot 1 for 6 in the third quarter.