During the first two minutes of an sPvP game (before the match has officially started and players haven’t all readied up) if a warrior engages in combat and gets downed they can use their ‘3’ skill Vengeance to be temporarily revived. If the duration overlaps with the game start then said warrior will die once Vengeance runs out and awards the enemy team 5 points and sets the player on a death timer.
Also if a thief uses Steal on an opponent during the pregame they may start the game with the stolen ability which may give them an advantage since Steal will also be off cooldown.
This certainly applies to unranked sPvP however I’ve not tested them in Ranked yet (as you wouldn’t want to die at the start of a ranked game).