In Overwatch, there is short countdown for a few minutes before the match begins. During this time, the defending team is allowed to roam the map to set up their defenses, while the attacking team sits in a small lobby until the game starts and the doors open. (Or in KotH-type maps, both teams wait in a lobby.)
While players wait, it's not uncommon for them to fire off random shots, especially since a lot of the environment is destructable (it's entertaining to watch plush onions sail through the air in the arcade).
Do shots fired before the match starts count towards accuracy statistics at the end of the game?