Trying to Make Sense of Leon Marchand's 4:02.31 500 Free
Leon Marchand demolished the US Open and NCAA record in the 500 freestyle, swimming a 4:02.31. For context, the NCAA record had been lowered by a total of 2.6 seconds in the last 29 years. Marchand just lowered it by 3.9 seconds.
The skinny
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