In the Bucks’ first two preseason games, Portis played a little more than 28 minutes and tallied 39 points. He has shot the ball with confidence and played with the swagger that has made him a dangerous scorer off the bench for years. “I love how we play Bobby,” Rivers said. “Like, he knows it coming in. Vinnie Johnson or whoever else you want to name, the great guys coming off the bench that ‘we’re going to you.’ Be responsible with it. He made a couple of good passes, too. But we want him to be aggressive.”