Gears Pro Circuit Online Tournaments and Ladders (operated by MLG):

MLG Live Support (for immediate/urgent help):
http://gamebattles.majorleaguegaming.com/staff/olt/ 

 

Gears Pro Circuit Rules, Roster, or MLG Events:

Tournament, Roster or League Ops related questions (via MLG):
leagueops@mlg.tv

MLG Event questions (North American Major Events):
events@mlg.tv

 

General

Non-MLG event questions (Mexico events, North American Minor events):
gearsprocircuit@microsoft.com

Code of Conduct or Travel Coverage questions:
gearsprocircuit@microsoft.com

General Support (including live broadcast questions and reward inquiries/assistance) :
Official Gears of War Discord chat (via web or phone app) in the #help channel. Make sure to tag the admins!