1) Not surprised. The Celtics are a great team and remember that Hayward played for Stevens in college.
2) Very small sample size, but Tatum has looked great in summer league. Adding Hayward and Tatum to a 53 win is going to make the Celtics really good. This might finally be the year for somebody in the East to dethrone the LeBrons.
3) For all their supposed free agent strike-outs, Boston looks like a 60 win team, a contender for the East's Finals' berth, and a red hot FA destination next year (can the Celtics put a shiv in the rival Lakers' back and steal Paul George??).