Didn't ever wrestler who wrestled in 2021 (frosh, soph, junior, and senior) get a free year. If so over the next 4 years you had 330 wrestlers occupy spots in the NCAA tournament. Divide that by 4 you get 82.5 wrestlers per year. So you have 330 who, if they wanted got a 5th year of eligibility. All of them did not take advantage of it though.