This page explains how Vasily Avram (USATT# 69750)'s rating went from 1911 to 1915 at the Boston TTC event from 5 Aug 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.