Sift through the list of world records and two – one male and one female – inarguably stand out as the most daunting. On the men’s side, there is the 800-meter freestyle standard of China ...

Summer McIntosh swam the fourth-fastest 400m individual medley in history and the eighth-fastest 200m butterfly ever at the first Tyr Pro Series meet since she won three golds at the Paris Olympics.

Summer McIntosh swam the fastest 200m butterfly ever this early in a year, winning over Regan Smith in a duel between the Olympic gold and silver medalists on Thursday. McIntosh, an 18-year-old ...