The aim of the present study was to assess effects of technique of execution, age and player's role on serve and attack efficacy. A total of 1.100 sen'es and 1.165 attacks from under-19, 927 serves and 1.015 attacks from umler-21, and 1.564 serves and 1.854 attacks from senior were assessed through video match analysis. Techniques considered for serve were standing serve (SS), jump serve (JS) and float jump ser...