This page explains how Sui Ning Zhu (USATT# 78674)'s rating went from 1676 to 1655 at the LATTF event from 8 Apr 2011. 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.