This page explains how Mark Malench (USATT# 64047)'s rating went from 1615 to 1619 at the Trolley Car Giant Round Robin held on - 22 Aug 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.