PHOTO (Duke Athletics): Freshman guard Jalen Johnson dunks on Clemson. By TOM SHANAHAN Duke placed five players in double figures, eight saw double-digit minutes and nine scored. Blue Devils coach Mike Krzyzewski has been rotating lineups all year seeking consistency, but this time it was different. Plenty of guys saw the floor because the game was in hand the final 30 minutes. Duke toyed with Clemson, winning 79-53 Saturday at Cameron Indoor Stadium. It wasn’t Duke’s first romp,…