Pattern:
得分 (to score points) +
手 ('-er' agent suffix). Common in basketball and football reporting:
头号得分手 (top scorer),
神射手 (sharpshooter / goal-machine),
助攻手 (assist-maker). The
手 suffix marks a skilled doer — compare
选手 (athlete),
高手 (expert),
杀手 (killer).