Dead Show Walking :: Magnum P.I. (CBS)
The premiere episode, following Big Bang & Young Sheldon leads, had just a 1.2 rating ... at 9pm ... on CBS ... dead show walking. Magnum was down 1.3 from Big Bang and 0.5 from Young Sheldon. Manifest on NBC an hour later at 10pm was a full point ahead at a 2.2 rating with more total viewers to boot. While some shows start out lower and climb in the ratings, the majority do not. Obviously it's too early to say 100% the show is headed for cancellation, but it doesn't have a lot of room/time to change things around ratings wise. I'm sure CBS was salivating at the thought of another Hawaii Five-0 syndication deal and might give the show more leeway than normal but at this point, it does not look good for the new Magnum. Delayed viewing and potential ratings increases will tell the tale, likely within a month after the numbers for the 3rd & 4th episodes are available. ymmv
For a review of the pilot by LadyShelly, see https://www.tvmaze.com/articles/337/i-saw-the-sunrise-magnum-pi-s01e01-review