Boston in 6.
Tbh I don't have this feeling about Raptors to be an extremely tough opponent for C's, that I had last season and a year before. Neutral court, Lowry is questionable (tho I guess he will be ok), JT should be the best player on both teams, 3-1 in RS (in this case I view it as a marker of current state of affairs), Kemba's great defense on VanVleet in those games..
Their bench rolling is one thing I'm seriously concerned. Grant, Romeo, Semi and others should step up. Also obviously Ibaka/Gasol match-ups, but since guys made a decent job with Joel, it doesn't seem that scary.