NBA training camps just opened and teams have yet to play a preseason game, but already two contenders are dealing with problems.

The Celtics have the suspension of coach Ime Udoka as a distraction, plus defensive anchor center Robert Williams will miss at least the start of the season following another knee surgery.

The Suns have the distraction of a suspended owner who is selling the team, plus Jae Crowder is out and demanding a trade, and Deandre Ayton does not seem happy.

Corey Robinson of NBC Sports and myself go through all the training camp news, including the wilder ones with the Lakers and Nets, breaking down what to take away from all that — plus how good Zion Williamson and James Harden look physically.

Then the pair discusses the potential of the NBA doing away with the one-and-done role and letting 18-year-olds back in the game — is that good for the NBA?

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Check out more on the Lakers

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PBT Podcast: What’s next for Celtics, Suns? Should NBA end one-and-done? originally appeared on NBCSports.com