This page explains how Sam Xiao (USATT# 217430)'s rating went from 464 to 543 at the 2017 Alameda Summer Open held on 24 Jun 2017 - 25 Jun 2017. 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.