This page explains how Lily Zhang (USATT# 31126)'s rating went from 2522 to 2530 at the 2015 US National Team Trials held on 20 Dec 2015 - 21 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.