This page explains how Ethan Guo (USATT# 271320)'s rating went from 1487 to 1462 at the 888 Silicon Valley Team Championships 2023 held on 27 May 2023 - 29 May 2023. 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.