BUDAPEST, Dec. 13 (Xinhua) -- Gretchen Walsh of the United States sparkled on the fourth day of the World Aquatics Swimming Championships (25m), shattering world record three times for a total of seven this week in Budapest.
In Friday morning's women's 100m butterfly heats, Walsh set a new world record with an electrifying time of 53.24 seconds. Later in the semifinals, she improved the world record to 52.87.
