This page explains how Alfred K. Adjei (USATT# 21776)'s rating went from 1843 to 1871 at the Longmont Spring Open held on - 17 Apr 2010. 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.