As if the Charlotte Bobcats didn't already have enough challenges, now coach Mike Dunlap has to practice triage with point guard Kemba Walker's minutes. This is the after-effect of backup Ramon Sessions' sprained knee, which could keep him out a month. Friday against the Oklahoma City Thunder, Dunlap sat down Walker in the third quarter and never brought him back for the fourth quarter of a 116-94 loss. With a road game Saturday in Washington, playing Walker any more than the 31 he logged would have been counter-productive. For now they're getting by with shooting guard Reggie Williams as the backup point. Not that "getting by'' describes the 13-49 Bobcats well these days. This was their ninth loss in a row and six of those were by 20 or more points. This one fell apart at the outset of the second quarter, when the Bobcats missed their first 10 shots.