Three-time Olympic swimming gold medalist Nancy Hogshead is calling on the WNBA to explicitly restrict player eligibility to biological females.Hogshead recently launched a Change.org petition asking the league to clarify the meaning of "woman" in its eligibility rules. The petition has collected more than 11,000 signatures since its Aug. 14 launch."We’re calling for the WNBA to clarify that its eligibility rules are for women only," Hogshead to…