1v1 Sumo League. Beginning July 29th.
From the
FAQ
What is 1v1 League Play?
The 1v1 League has several divisions, based on skill level. Each season, all 8 members of a division play each other twice. The player with the best record in the division is crowned champion. The top two players from each division are promoted to the next division, and the bottom two finishers of each division are relegated to the division below them.
What are league matches like?
Players play 3-4 matches each week. A match is best of 3 sets, each set is first to 6 points, just like Open matches. League matches also count towards Elo. If you are the home team, you get to pick EU/US server. You are the home team if your name is listed on top of the report form.
When are league matches like?
Each week 3-4 opponents are scheduled, but those 4 matches may be played at any time during the week. When you are available to play, you should be in the IRC room #armagetron.1v1. You should also use the mail system on toursumo to arrange match times.
How long is each season?
4 weeks, top of the table is champ.