Mavericks GM says Kemba Walker's knee is 'not good,' but the hope is he can still be a small playmaking spark | CBS Sports Headlines Mavericks GM says Kemba Walker's knee is 'not good,' but the hope is he can still be a small playmaking spark Walker hasn’t played in … Continue reading Mavericks GM says Kemba Walker's knee is 'not good,' but the hope is he can still be a small playmaking spark