Every player plays two 11-point matches against all other players in their four-player division. Two points for a win, one point for a loss. There is one promotion spot and one relegation spot in each division.
Each season lasts 3 months. Seasons commence on the first day of each quarter and finish at Midnight on the 25th day of third month at the end of each quarter.
Full rules can be found here
Other divisions for 2017 Q3 can be found here