Glossary

Hitting Efficiency=(kills-errors-blocks)/attempts

where kills=number of successful attacks, errors=number of attacks that were hitting errors, blocks=number of attacks that were blocked, and attempts=total number of attacks. Hitting Efficiency indicates the amount the point difference between the attacking team and the opponent was increased by each swing.

Kill Percentage=(kills/attempts)*100%

where kills=number of successful attacks, and attempts=total number of attacks. Kill Percentage indicates the fraction of attacks that led directly to a point for the attacking team.

Sideout Percentage=(receive points/opponent serves)*100%

where receive points=number of points won when receiving the serve, and opponent serves=number of times the opponent served. Sideout Percentage indicates the fraction of rallies where a team received the serve and went on to win the point.

Point-Scoring Percentage=(serve points/serves)*100%

where serve points=number of points won when serving, and serves=number of serves. Point-Scoring Percentage indicates the fraction of rallies where a team served and went on to win the point.

Hitting Effectiveness=Hitting Efficiency-opponent Fraction*opponent Response Efficiency

where opponent Fraction=fraction of attacks the opponent followed with an attack of their own, and opponent Response Efficiency=opponent hitting efficiency on their response attacks. Hitting Effectiveness provides a way to account for attacks that did not end the rally. If an attacker regularly puts balls into play that the opponent can easily control and then get an attack of their own, that attacker will have a lower Hitting Effectiveness.