I thought that McCarver was trying to make the point that they'd pitched before divisional playoffs so they had fewer opportunities to pitch than someone like Lee has today, although it doesn't matter because McCarver is so heroically full of shit.
I absolutely assure you that McCarver was not making that point to inform you, the listener at home, that those fellows had fewer opponents/games per postseason. It was entirely because, as a wise man once said, he is heroically full of shit.
Can you imagine what it must be like to be that moron's wife?
"I SEEM to have CUM in your HAIR. If there was one thing you WISH you had DONE before having intercourse....
with me....is moving the KLEENEX closer to the PILLOW. NOW...you'll notice that the CUM has bonded with the HEADBOARD and that I'm GETTING UP to eat a SANDWICH. I used to catch Bob Gibson."