This page explains how Keito Hosokawa (USATT# 217875)'s rating went from 1357 to 1355 at the South Bay Winter League event from 16 Feb 2018. 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.