TORONTO — As Khris Middleton stepped off the plane in Las Vegas, he wasn’t quite sure how to feel. He was dealing with a lot of changes.



After four seasons with Jason Kidd as coach of the Bucks, there was a new person in charge. Former Atlanta Hawks coach Mike Budenholzer had taken over as head coach of the Bucks two months earlier.



Middleton had gotten to know Budenholzer and his staff during that time, especially former Bucks player and new assistant Darvin Ham, and started to prepare for the upcoming season.



Middleton was in Vegas taking part in a Team USA training camp for the first time. He was coached by Budenholzer’s mentor and future NBA Hall of Famer, Gregg Popovich.



The Spurs head coach understood what Middleton might be thinking as he stepped onto the Team USA floor for the first time and offered to help.



“There’s a lot of great players out there. And when you get on the court and you look...