Probably G P S Trackers etc

Heart rate , distance covered , recovery between maximum effort. Then compared to other stats. I should say most pro clubs use it, Wakey use it .

Standard stuff now.

Wow, I never knew that, I'm so out of touch. Amazes me the depth of detail that coaches go into when you compare it with the coaching at amateur level it's a different world, my first 3 years of coaching was being told to hold the ball and run at the gap and very little else and they where a decent outfit at the time.

It used to be cutting edge stuff - most of the same functionality is now available to the average joe in a wearable device; I got so bogged down with stats and details, that I've binned mine off and gone back to basics - I don't like being told what to do by a frigging watch.

Good for pro's though - I guess it feeds directly into what trainers, conditioners and dieticians are doing with them on a day to day basis. Or they're robots, as per the OP's suggestion.