It only filters on the first checkbox if you select. For example, if you select only FOrwarrds, then Midfielders and Forwards, then only Forwards will be displayed. For example: https://www.xgstat.com/competitions/premier-league/2025-2026/players/fantasy?sort=[{%22id%22:%22form%22,%22desc%22:true}]&position=3,4 I do not believe the comma is parsed correctly in this URL.