Win% represents the percent games played that were won. Games Won + ( Games Tied × 0.5 ) ) ÷ Games Played = Win% ( 1 + ( 0 × 0.5 ) ) ÷ 1 = 100.0% SOS1 represents the average of opponents' Win% for each game. AVERAGE( 0.0% ) = 0.000 SOS2 represents the average of opponents' SOS1. AVERAGE( 1.000 ) = 1.000 RPI represents the Ratings Percentage Index ( 40% × Win% ) + ( 40% × SOS1 ) + ( 20% × SOS2 ) = RPI ( 40% × 1.000 ) + ( 40% × 0.000 + ( 20% × 1.000 ) = 0.600 ( 0.400 ) + ( 0.000 ) + ( 0.200 ) = 0.600