In the current NBA league, it is particularly difficult for a team to successfully defend their championship title. The Boston Celtics managed to win the championship last year, but this year they face significant challenges in attempting to repeat their success and claim another title. The Celtics boast an impressive core lineup that is considered the most perfect in the league: Jayson Tatum, Jaylen Brown, Kristaps Porzingis, Jrue Holiday, and Derrick White form a formidable quintet, supported by players like Payton Pritchard, Al Horford, and Sam Hauser. However, even with such a strong roster, the Celtics have occasionally suffered unexpected losses to weaker teams, causing a major upset in the league's dynamics. The Celtics have a record of 28 wins and 12 losses, placing them second in the Eastern Conference, just behind the Cleveland Cavaliers. Meanwhile, the Toronto Raptors have a record of 10 wins and 31 losses, ranking 13th in the East and third from the bottom in their division. Despite the clear advantage in terms of roster strength, the Raptors managed to pull off a surprising victory against the defending champions, the Celtics. In the final quarter of their recent match, the Celtics experienced a nearly four-minute scoring drought, while the Raptors sealed the game with a decisive 14-2 run. This unexpected defeat has left many fans and analysts puzzled, as even the Celtics' head coach, Ime Udoka, has been unable to pinpoint the cause. According to official reports from ESPN experts, the Celtics have won only two out of their last five games, with three losses featuring…