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That’s probably too big a drop off to be permanent, and Duke’s horrific performance at Miami felt like a once-per-season collapse, not a permanent sign of bad things to come. But I think it is informative how Mike Krzyzewski is allocating playing time with Kelly out. While Amile Jefferson has seen his percentage of minutes increase from 21 percent to 58 percent in the four games Kelly has been out, the second biggest beneficiary of playing time is actually Mason Plumlee. And this worries me a little bit if I’m Duke. Plumlee has been playing 96 percent of Duke’s minutes since Ryan Kelly has been out, and Krzyzewski seems hesitant to ever take him out. I worry that all those minutes are having a negative impact on Plumlee’s energy level. Plumlee’s ORtg was 115 prior to Kelly going down, and has been just 95 in the four games since Kelly went down. Some of that is due to the tougher ACC defenses Plumlee has faced, but you have to wonder if the lack of rest time is hurting Plumlee’s overall performance.