i think a factor here is AL vs NL. 77 is only 5 years after the DH and you gotta figure managers thought the SP were better than any junk they could bring in from the BP. i suspect these massive inning guys getting mauled were all ALers, though i haven’t researched it much. SP pitching longer without being able to face the P 9 hitter 3-4 times likely caused issues too. simply, you can’t throw what, over 80 RP innings and bounce back the following year? teams only just beginning to realize RP are fly by night. well, except the mets who think edwin diaz will be the same every year.