ABSTRACT This paper investigates how volleyball net height can be scaled to account for differences in vertical spike reach. Although such differences are not exclusively determined by sex, the observed gap between male and female players makes sex*based comparisons particularly relevant. The official net heights of 243 cm for men and 224 cm for women differ by 19 cm, a regulation intended to compensate for physical disparities between the sexes. We examine whether this adjustment ensures comparable offensive opportunities when evaluated in terms of observed spike reach. To isolate the geometric effect, other performance*related factors are deliberately disregarded. Using a geometric model linking net height to spike reach, our analysis shows that the current 19 cm gap is insufficient to ensure equal attacking opportunities. At the elite level, geometric equivalence would require lowering the women's net to about 213 cm or raising the men's net to about 253 cm. The disadvantage faced by female players becomes even more pronounced at lower performance levels.
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