This page explains how Xizi (stephanie) Sun (USATT# 92947)'s rating went from n/a to 2155 at the HI Friday event from 1 Jun 2015. 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.