Net-Kill Opportunity Created by Smash in Badminton Doubles

Badminton is one of the most popular sports in the world. In this paper, we examined the assumption that smash in the badminton double discipline is tactically different from the single discipline and that there exists a powerful three-stroke sequence: cooperation of smash and net-kill (CoSN). Four evaluation criteria (direct scoring rate, create scoring rate, net-kill opportunity and awards) were proposed in this paper. Five smash parameters (height of impact-point, post-impact shuttlecock speed, distance from impact point to back boundary line, shuttle flight time and height of trajectory end-point) were measured and counted in a balls-into-bins model to investigate the link between scoring rate and smash parameters. We collected a dataset comprising 55,433 strokes from 46 world-class women doubles games. We found the most relevant smash parameter is shuttle flight time. The knowledge of low-cost-high-reward smash behaviour helps to improve training methods.