This page explains how Nick Nicioli (USATT# 35486)'s rating went from 1559 to 1557 at the STTC 17th Anniversary RR Open held on - 5 Apr 2003. 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.