I'm not sure which specific swimmer has set a world record today. You could check sports news websites or apps like ESPN or Yahoo Sports for that information. They usually update quickly about such events. Why don't you tell me what kind of swimming ... more I'm not sure which specific swimmer has set a world record today. You could check sports news websites or apps like ESPN or Yahoo Sports for that information. They usually update quickly about such events. Why don't you tell me what kind of swimming event it was? Maybe I can help further.