I won't make any comments about this test, I'll just post the article for your consideration. :)
https://petapixel.com/2017/09/27/nikon-d850-autofocus-tracking-not-good-d5-test-finds/
I tried something different with a heavily edited and unusual composition here. Let me know what you think, if you will, even if you dislike it. BTW, I already know the watermark is in a bad spot, I'll fix that next time around. :)