Giannis posts a triple-double as the Heat score 145 against the Pacers

Giannis Antetokounmpo had 31 points, 18 rebounds and 10 assists Friday night as the Miami Heat beat the Indiana Pacers 145-125 in their NBA Cup group opener in Miami. It was his second triple-double of the season, and he got it in 31 minutes.

Antetokounmpo shot 13 of 19 and finished plus-31, according to the ESPN box score. Bam Adebayo added 27 points on 11-of-14 shooting with nine rebounds and three steals.

Klay Thompson had his best night since joining Miami. He scored 25 points and made 7 of 12 3-pointers, which left him 55 behind former Heat guard Ray Allen (2,973) for third on the NBA's career list, per the Associated Press. Davion Mitchell had 15 points and 11 assists, and Pelle Larsson scored 18.

Indiana actually started fast. The Pacers scored 42 points in the first quarter, then managed 46 in the next two quarters combined while Miami put up 67. The Heat shot 54 of 93, made 18 3s, handed out 38 assists and scored 64 points in the paint.

The Pacers were down to 11 available players. Tyrese Haliburton is out at least a couple of weeks with a hamstring strain, and Obi Toppin's back went out before shootaround Friday morning, acting coach Lloyd Pierce said. Pierce was filling in for Rick Carlisle, who was at his father's funeral in Ogdensburg, New York.

Quenton Jackson led Indiana with 24 points, and Andrew Nembhard scored 22 with nine assists. Pascal Siakam had 13 on 5-of-17 shooting and missed all five of his 3-point tries.

Miami has won two straight and is 2-4. Indiana is also 2-4, and the AP pointed out that every team to reach the NBA Cup knockout round has gone 4-0 or 3-1 in group play, so the Pacers have little room left in their group.

What's next: The Pacers host Brooklyn on Sunday. The Heat head west to face the Lakers on Monday, after Miami's 0-4 start turned into two straight wins.