system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How sports commentators can recall an obscure stat within seconds of a play.

I am thinking of NFL commentators that literally give a certain stat that is quite obscure within seconds of some record being set/broken. But this can apply to any sport, of course.
gpt
At the highest level (think Sunday Night Football) there will be an army of producers doing research and putting things in front of Cris Collinsworth and Al Michaels. But Cris and Al study notes for days before a game, interview players, etc. so they're prepared with lots of material, even if they don't know that Peyton Manning has 186 wins, they probably know it is Brett Favre who he is about to exceed in that category.

At lower levels (think regular season baseball game), the announcers do a lot more of the work themselves, with assistance from possibly one producer. Things like "This would be the 3rd no-hitter for R.A Dickey" are probably looked up by the announcers during a commercial break, or even during an inning. But again, a lot can come from memory since these regular season announcers will watch 150 games a season plus some spring training games.