Katie Boulter’s French Open win has put Emma Raducanu’s British No. 1 ranking under threat. The ranking race is in play because Raducanu has already been dealing with a recent return from a post-viral illness and a ranking slide after time away from competition. If Boulter keeps advancing at Roland Garros while Raducanu loses ground, the British No. 1 spot could change hands. The immediate consequence is that every French Open result for both players now carries ranking weight beyond the draw itself.