This page explains how John Jarema (USATT# 6975)'s rating went from 1890 to 1880 at the NJTTC Monday League event from 10 Jun 2019. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.