Depends on how you’re seeing it.
Are you watching the feed straight from the uplink truck at the game thanks to a “big dish” in your back yard? Less than a second.
Are you watching the feed uplinked from the network? Maybe 1–2 seconds.
Using an OTA antenna from a local broadcaster? Maybe 5 seconds.
Cable or satellite provider signal? 10–15 seconds.
Streaming? Anywhere from 20 seconds to 1 minute.