This page explains how Peter Cao (USATT# 219413)'s rating went from n/a to 1552 at the Boston TTC Div.B event from 8 Apr 2019. 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.