This page explains how Gary D. Wittner (USATT# 11201)'s rating went from 1877 to 2025 at the New England Team RR held on - 8 Apr 1995. 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.