Actual to Predicted (IKKOS Free Throw Intervention) As a reference, the past 18 NBA regular seasons (excluding strike shortened seasons in 2011 and 1998) were utilized. Then the 2013-14 season was split into lower/higher categories based on team free throw percentages. Assuming the lower half of the league increased their team free throw average by 2 percentage points (ex: 69% - 71%), the 2013-14 season was simulated and compared to actual results.