Brad Stevens interviewed during Celtics-Mavs summer league contest

During the second quarter of Boston's 88-82 summer league victory over the Dallas Mavericks, Celtics head coach Brad Stevens visited ESPN announcers Chris Hassel and Brad Daugherty to discuss the Celtics off-season, summer league action and things he'd like to see improved next season

Stevens when asked about Jaylen Brown and if his college coaching experience helps when getting young players up to speed in the NBA:

"The biggest thing is that you're patient about getting better every day. You focus on that and you don't take your focus off of that. We're in a rollercoaster of emotions during the season with regard to how people react to wins and losses, but we just have to focus on the…