Adjusting to life in the NBA can be a task for any rookie. Apart from getting ready for the highest level of basketball in the world, these young athletes must realize that they are no longer just fans — they're also professionals who must respect their new colleagues. An opinion is not just an opinion, because it could also offend someone very close by. [ Follow Dunks Don't Lie on Tumblr: The best slams from all of basketball] New Los Angeles Lakers guard D'Angelo Russell, the second overall pick in June's draft, just found this out the hard way. The 19-year-old ex-Ohio State star sent out a fairly innocuous, if not especially factual, tweet about Tracy McGrady on Thursday: Honestly Tracy McGrady might have been the GOAT! — D'Angelo Russell (@Dloading) August 13, 2015 The problem for Russell is that he plays on the same team as Kobe Bryant, a superior player to McGrady and one of the more historically aware stars in recent memory. Not surprisingly, Kobe had some thoughts on that comment: 😴 https://t.co/Bntj1e5PsY — Kobe Bryant (@kobebryant) August 15, 2015 Russell immediately realized his mistake without rescinding his praise: @kobebryant lol my bad he...