Bill Self dared Ben McLemore to be more aggressive Thursday night. If the freshman guard hadn't heeded the challenge, seventh-ranked Kansas could have left the court inside Allen Fieldhouse with consecutive losses for the first time in ages. McLemore wound up with 25 points and eight rebounds, and teamed with Elijah Johnson to trigger a big second-half charge, allowing the Jayhawks to escape with a 69-55 victory over Chattanooga.