The final team registration deadline for MAO is Monday, July 30th at 11:59 PM PST (this is listed on APPA).
Rosters will remain unlocked for changes until sometime the week of the event, when we start printing up the paperwork. At that point, there is a $20 per-player add fee. You can add a player at any point in time through the event, as long as you have space on your roster for that player. You cannot drop players from your roster after your first game has started.