This page explains how Nhat Nam Trinh (USATT# 72249)'s rating went from 2215 to 2152 at the Boston TTC event from 25 Nov 2014. 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.