It has been a bad year for No. 13 Clemson to have its best Atlantic Coast Conference season.With three regular-season games left, including a Saturday test at Virginia, Clemson already has collected more conference wins than any other season in its 72-year ACC history.Just one problem. Clemson (23-5, 15-2 ACC) still trails No. 2 Duke (25-3, 16-1) in the conference standings. While the Tigers handed the Blue Devils a 77-71 defeat on Feb. 8, the game remains the only blemish on Duke’s conference record.In a down year for the ACC, the Tigers have not gotten any help in their pursuit of the Blue Devils.”We’re not really talking about those things,” Clemson coach Brad Brownell said. “We just keep talking about if we play well and handle business and do things the right way, then we’ll keep having important games. I think an older group like we have, that has resonated with them.”Brownell was speaking Wednesday night after Clemson rolled to its fifth straight victory, 83-68 over visiting Notre Dame. Of the Tigers’ 15 conference wins, 13 have come by double-digit margins.Most of the victories have been surgical and stress-free for the business-like team with a veteran starting lineup.Against the Fighting Irish, the Tigers led for all but 70 seconds and posted 23 assists and just four turnovers for the second-best assist-to-turnover ratio in program history. Viktor Lakhin and brothers Chase Hunter and Dillon Hunter each contributed five assists with no turnovers.Clemson also dominated inside against Notre Dame as 6-foot-8 Ian Schieffelin made 9 of 11 shots and scored a career-high 24 points with nine rebounds. Meanwhile, the 6-11 Lakhin hit 8 of 17 shots for 18 points.Clemson takes a six-game road winning streak to Virginia, which has been on an uptick of its own. The Cavaliers (14-14, 7-10) have won four of their past six, including an 83-75 road upset of Wake Forest on Wednesday.