There are several teams in the NBA that are expected to win the championship this year. Tell me the reason?

No. 1 seed Cleveland Cavaliers No. 2 seed Boston Celtics No. 3 seed San Antonio Spurs No. 4 seed Los Angeles Lakers Cleveland made reinforcements at the No. 2 and No. 3 positions in the summer, and at the No. 5 position After trading the Sharks, the overall strength has been strengthened. Especially the previously weak back line and bench can rank high in the Eastern Conference. Without major injuries, I believe they can at least enter the Eastern Conference finals. The Boston Celtics have always had the same main team that won the championship in 2008. Last year, due to Garnett's injury, there were problems in offense and defense in the paint. This summer, they welcomed the roaring Wallace and signed the swingman Daniel. After that, Si believes that the strength will be further strengthened. Now the top priority is to keep the big baby to prevent problems with the internal staff rotation. I believe that the Celtics will compete with the Cavaliers in next year's Eastern Conference finals. However, due to the aging of the players, injury problems will be Their biggest challenge, the San Antonio Spurs, welcomed Jefferson this summer. Coupled with Ginobili's recovery from injury and the addition of veteran McDyess, the Spurs will enter the Western Conference finals next year. The Los Angeles Lakers are the defending champions, but the aging of the main structure and The bench is not deep enough and they will encounter great challenges next year. Artest's joining has strengthened the Lakers' defense on paper, but the decline in his character and condition will test Jackson's training ability. Odom may leave the Lakers, and the Lakers' strength will further decline. Therefore, the Lakers' future next year Defending the title will be even more difficult, and Kobe alone cannot win the championship. Overall, next year’s championship will be Cavaliers>Celtics>Spurs>Lakers