All of the major sports networks have initiated what's known in the industry as at-home or REMI remote-production techniques in recent years. ESPN was early on this, right around the time they also started hiring the freelancers they were using for remote production as employees. (The vast majority at other networks still are freelancers.) REMI involves a scaled-down crew placing microphones and cams that can be remotely operated, such as the speed cams on NASCAR tracks. Signals are sent back to the plant in Stamford or Bristol or wherever, where graphics, audio mix, etc. can be done. REMI is flexible: you can do as much or as little on site remotely as a budget permits, and latency is no worse and usually way better than the profanity delay. The point behind REMI is to lower production costs using fewer personnel on site and utilizing production platforms, such as graphics engines or audio consoles, at the plant versus deploying numerous redundant iterations of them on site.
The new generation of remote-production trucks from Game Creek, NEP, et al. are using IP backbones. Less cabling and hardware, thus lighter (weight is critical for remote production) and cheaper to build, operate and rent. It's the difference between your desktop in 2002 and your phone today.
NBC Sports' production of the last Olympics in PyeongChang was an achievement for REMI. Many of the events were directed and mixed from Stamford.
Every stadium and arena today, from pro to high school, are built with coax, fiber and other cabling installed and integrated between the field/announce booth/venue control room and the truck docks. It's complicated but remarkably efficient. And it's certainly keeping me busy editorially during Covid-19.