(Portland, OR)  --  The Trail Blazers will take on the Mavericks tonight at home.  They will be without guard CJ McCollum, who was diagnosed with a popliteus straight in his left knee.  He will be re-examined in a week, the team announced.  The Blazers have won four out of five and are in the four spot in the West, a game and a half behind the Rockets for third, and a game and a half in front of the Spurs.