The 145–125 home win over Indiana means Miami have now won two straight games after starting the season with four losses.
Larsson played just over 23 minutes and scored 18 points - his best performance so far this season. He was the team's fourth-highest scorer in the game.
Meanwhile, the team's new addition, Giannis Antetokounmpo, continued to impress. The Greek star scored 31 points, grabbed 17 rebounds and recorded 10 assists.
Miami scored a total of 145 points - the team's highest total so far this season.
Miami will now have two days off before heading west for a five-game road trip. The first game will be against Los Angeles on Monday.
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