2.2.1 Which Player is better? 2.2.2 Form on the Day, Rating Scale and Classes. 2.2.3 Both Players have a Form on the Day. 2.2.4 Two Players of Equal Strength Compete Against Each Other. 2.2.5 When Does the Stronger Player Lose? 2.2.6 The Winning Expectancy. 2.2.7 Our first Rating.