The Chatham Club Open Ladder is an annual ladder that allows players to challenge a player up to ten positions ahead of them on the ladder. As many as three active challenges at a time. Challenges must be played within 14 days or they default to the challenger. Rematches are allowed after 14 days. Sign up, challenge and record results on the club ladder page here https://clublocker.com/ladders/1276/sign-up