```html

Celtics Defeat Mavericks 107-89 in NBA Finals Game 1

Kristaps Porzingis Returns with Impressive Performance

The Boston Celtics took an early lead in the 2024 NBA Finals with a convincing 107-89 victory over the Dallas Mavericks in Game 1. Despite a valiant effort from the Mavericks, the Celtics' dominance proved too much to overcome.

Porzingis' Impressive Return

Kristaps Porzingis made his much-anticipated return from a calf injury in Game 1 and made an immediate impact. The Latvian phenom dropped 20 points, including 18 in the first half alone. His presence on the court gave the Mavericks a much-needed boost, but it wasn't enough to match the Celtics' firepower.

Celtics Take Control

Jayson Tatum led the Celtics with a stellar performance, scoring 32 points and connecting on five 3-pointers. The Celtics also benefited from a balanced scoring effort, with five players finishing in double figures. They seized control of the game in the second quarter and never looked back, extending their lead throughout the rest of the contest.

Luka Dončić's Triple-Double

Luka Dončić put up another impressive triple-double for the Mavericks, finishing with 33 points, 11 rebounds, and 9 assists. However, his efforts were not enough to overcome the Celtics' superior defense and teamwork.

Game 1 Conclusion

The Celtics have taken a 1-0 lead in the NBA Finals and will look to continue their momentum in Game 2. The Mavericks, on the other hand, must find a way to respond and level the series. Game 2 is scheduled for Sunday, June 2nd, at TD Garden in Boston.

```