For me…
Jim Perry was in his stride from most of his entire Card Sharks run right up to the Winner’s Board-WBMG transition on Sale of the Century (mid-1987). He brought a lot of energy to those shows, but by 1987, I noticed that energy was down a bit. Not like Bob Barker in the 2000s phoned in, but it seemed to me he was ready for Sale to end.
Richard Dawson from Match Game 1975 (especially PM) to the introduction of the lollipop tree in Family Feud. He basically was THE MAN during that period, but by that point in 1983 (maybe late 1982), with a(n IMO) noticeable change in his demeanor and appearance, the work may have caught up to him a bit.
Bob Barker from about 1978 - 1987. He was “The Dawson” for some weeks of the twilight years of Rayburn’s Match Game, on top of making his eventual ascent as the top guy in daytime television with The Price is Right. I feel that by 1987 - with the recent loss of Johnny Olson, the passing of his wife (which I think led to a lot of the sordid stuff that was brought to light after), and the change in production quality (compare the opening sequences from a 1984-85 episode to one in 1987), he lost a lot of the charm that the grey hair change couldn’t offset.
I read some of the comments regarding Pat Sajak, and there was one part that I read that grabbed my attention:
By 2002 or so, he really started phoning it in, and I really would love to see how much of a correlation there is between him realizing he wasn’t becoming the next Jack Paar.
If I am not mistaken, this was right around the time Pat took one last crack at talk shows with Fox News’ Pat Sajak Weekend. Once that fizzled out, it seemed he accepted the idea that Wheel was the train he was destined to stay on.
The Inquisitive One