RENO --David Carter doesn't hesitate when asked what the biggest challenge his Nevada Wolf Pack will face Wednesday night (6 p.m.) against the Wyoming Cowboys in Laramie, Wyo."Leonard Washington is the key to their team," the Pack head coach said.Carter witnessed up close what Washington could do back on Jan. 12 in a 59-48 Wolf Pack loss to Wyoming at Lawlor Events Center. The 6-foot-7, 230-pound Washington had 16 points and 13 rebounds, as well as six assists, four blocks and three steals."He dominated inside," Carter said. "We can't let him just set up in the paint."Washington, who had 18 …