CHARLOTTE, N.C. (AP) — Clemson coach Dabo Swinney is happy his players can finally make the case for themselves that they are a championship-caliber team. The third-ranked Tigers (12-0; No. 3 CFP) take on No. 22 Virginia (9-3; No. 23 CFP) for the Atlantic Coast Conference championship on Saturday night, knowing a win cements their fifth consecutive appearance in the College Football Playoff. …