I don't have the stats with me (they're at home in an old-timey printout) but I used King for 82 complete games in an open league recently. I think he won 56 but the rest of the staff only 29 and we missed the playoffs. He was at 100 for every start. His stamina was usually in the 70's after starting, else I would have tried back-to-back starts. (I did do that once, using the All-Star break to restore him to 100.) I had hoped that as the season wore on he would be at 80+ or even 90 after pitching but it never happened.
I had him on 1/1 with no pitch limit and no substitutions (all other pitchers were on "rest" when he started and his PH/PR options were turned off). He was dominant, but as you would expect he got tattooed in extra innings a few times when he got tired. His innings were more than 738 since extra innings outnumbered lost ninth innings in road game losses.
I'm sure many posters here remember the "Superman" era when you could get him to near 1,000 by having him go 5 or more innings out of the pen every game. Some players used other pitchers, finding that you could greatly exceed RL IP/162 by using pitchers this way. The fix for that added "tired from recent game activity" and "appearing in XX% of games" to pitching fatigue.