I have a really hard time looking at McClain's last season at UCLA - if not his entire career at UCLA - and projecting him to what he is doing this season.
He's hit 19 HRs this season so far and he hit a total of 16 in his career at UCLA with aluminum bats. He slugged .425 in his only season in the Cape Cod League.
As for Abbott, one of these two is Abbott's last season at Virginia and one is Ethan Small's last season at Mississippi State:
106 IP, 89 H, 32 BB, 162 K, 13 HR, 2.7 BB/9, 13.7 K/9
107 IP, 61 H, 32 BB, 176 K, 8 HR, 2.7 BB/9. 14.8 K/9
IIRC, the scouting reports said that both worked in the low 90's in college. If Small didn't work out/couldn't be fixed, how could we expect Abbott to?