• In this Saturday, Sept. 24, 2016, file photo, Louisville quarterback Lamar Jackson (8) warms up before an NCAA college football game against Marshall in Huntington, W. Va. Another Atlantic Division showdown, this time between No. 3 Louisville and No. 5 Clemson, plus a matchup of Wake Forest’s defense and NC State’s efficient offense and Syracuse’s chance to upset Notre Dame headline Week 5 in the Atlantic Coast Conference. (AP Photo/Walter Scriptunas II, File

    Clemson’s Task: Slowing down No. 3 Louisville’s QB Jackson

    CLEMSON, S.C. (AP) — Clemson’s rebuilt, young defense has passed its earliest tests to keep the fifth-ranked Tigers undefeated. Now, they face perhaps the biggest challenge of the season in slowing the remarkable roll of No. 3 Louisville and quarterback Lamar Jackson.