I've read a lot of criticism of Yoon's play this year...but I don't recall him getting relentlessly pummeled last year.
And he played v some pretty good players last year. He became the starting center in G3 v LSU. So he missed Indiana. But did catch LSU, OR, Ped State, etc. etc.
Don't you "have to think" that all players get better from one year to the next? He should have at least gotten more physically mature and stronger...that's what the year-round S&C and nutrition program is for.
In retrospect, it was a miracle that Ucla won 5 games last year. The players deserve a lot of credit. Almost all the coaches got fired, so I don't think the HC thinks they did a good job. Maybe he's a bad judge of performance.