via the ARRL: ARRL Announces Club Competition Eligibility Changes

Earlier this year, following a challenge that resulted in the realignment of several club scores in the ARRL 10 Meter Contest, it became clear that the Club Competition rules were not being enforced as consistently as they should have been. In order to make sure club results are accurate and fair to all, the ARRL Contest Branch is renewing its effort to help clubs comply with the rules (See Section 8 of the “General Rules for All Contests.”) The Contest Branch has announced changes in three areas: Online uploading of club rosters, the use of six-character grid locators, and the deadline for submitting eligibility.
via American Radio Relay League | Ham Radio Association and Resources