A close loss at home left Clemson head coach Dabo Swinney to study film of the Tigers’ loss to LSU, and generate a metaphor winning coach Brian Kelly invited his counterpart to punt.LSU defeated Clemson 17-10, but Swinney likened the matchup of preseason top-10 teams to starting a class with a final exam.”It was a hell of a game,” Swinney said Monday. “It’s like getting a final exam, Day 1 of class. They made a 65. We made a 58. Neither one of us were great.”Kelly won an opener at LSU for the first time and didn’t take the grading curve suggestion lightly on Tuesday.”Well, I mean … I thought we dominated them in the second half. So, he’s either a really good grader for giving himself a 58, or he’s a really hard grader on us,” Kelly said. “Or he didn’t see the second half, which that might be the case. He might not have wanted to see the second half.”