In a significant setback for the Boston Celtics, superstar Jayson Tatum has been ruled out of Game 7 against the Philadelphia 76ers due to left knee stiffness. This decision was made shortly before tipoff, with Celtics coach Joe Mazzulla stating that Tatum reported discomfort behind his knee. Initially, Tatum was listed as questionable, having played through the previous games without any reported issues. The Celtics, who have historically dominated the 76ers in the playoffs, are looking to extend their winning streak against them, having won six consecutive postseason matchups since 1982. Boston leads the series 3-3, and they have a flawless record of 32-0 when leading 3-1 in a best-of-seven series, while the 76ers have never won (0-18) when facing this scenario. Tatum's absence could significantly impact the Celtics' performance as they seek to advance further in the playoffs.