See that's the thing. Having one OAD player doesn't make it an "OAD team." Here is the percentage of minutes played by freshmen in each of the last 10 seasons:
2009: 10.5% (S16)
2010: 14.5% (title)
2011: 10.9% (S16)
2012: 23.8% (1st rd)
2013: 23.6% (E8)
2014: 19.8% (1st rd)
2015: 50.0% (title)
2016: 46.8% (S16)
2017: 33.4% (2nd rd)
2018: 67.5% (E8)
2012 wasn't a freshman-dominated team any more than 2013 was (and 2013 was considered a veteran team). And 2014 had fewer freshman minutes than either.
I agree with Jason that the only years we truly had a freshman-centric team were the last four seasons (and of those four, the team that that did worst in the NCAA tournament was the team that had the fewest freshman minutes).