Milwaukee Bucks forward Khris Middleton will come off the bench on Wednesday night against the San Antonio Spurs, a move Bucks coach Doc Rivers said has more to do with his health and minutes restriction coming off bilateral ankle surgeries over the summer than his production on the court. “It’s just not improving to the place he wants it or we want it, so we just got to monitor,” Rivers said about Middleton’s health. “We’re cutting his minutes back a little bit and just trying to make sure he gets through this.”