This page explains how Adar Alguetti (USATT# 83381)'s rating went from 2552 to 2502 at the US Nationals held on 14 Dec 2015 - 18 Dec 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.