PREVIEW: The Oklahoma City Thunder arrive at TD Garden ranked first in the league with an elite defensive foundation built on low turnover rates and lockdown perimeter defense , while the Boston Celtics counter with their own defensive prowess, ranking first in defending three-point attempts. The Thunder have won 12 consecutive games and sit atop the Western Conference with a 57-15 record , bringing relentless momentum into this rematch. The two teams met just days ago with the Thunder securing a 104-102 victory at home, with Shai Gilgeous-Alexander scoring 35 points. The Celtics' offensive spacing ranks second in the league, but they rank 30th in free throw rate, suggesting their offensive approach relies less on attacking the rim. Gilgeous-Alexander enters averaging 32.7 points while shooting 52.5 percent from the field and 37.3 percent from three , establishing himself as the primary challenge Boston must contain. The Thunder's ability to force turnovers ranks second overall, creating a nightmare scenario for a Celtics squad that needs ball security against this suffocating defense. The Celtics have won their last five games and sit 23-11 at home, providing homecourt confidence in this revenge opportunity . Both teams understand the stakes in this Finals preview, setting the stage for another closely contested battle between two of the league's premier defensive squads.