After Damian Lillard scored 39 points Tuesday in the Trail Blazers’ season-opening win over Utah, he noted that summer workouts with a special, mystery coach played a role in his performance. "That’s my special secret,’’ Lillard said Tuesday night when pressed for the name and background of the coach. "I will tell you guys at a later date.’’ Turns out, the mystery coach might not be much of a mystery to Portlanders. His name is Brian Barkdoll, a 27-year-old video assistant for the Blazers, who graduated from Central Catholic in 2007 after being named the MVP of the Mt. Hood Conference.