* Zyaire Nuriddin was the first athlete to break 46 in the 400m this weekend at Florida Relays
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Over the weekend, there were a total of 14 new US No. 1 performances.
One of the highlights was seeing Zyaire Nuriddin of Montverde Academy (FL) become the first boy to break 46 in the 400m at Florida Relays so far this outdoor season.
On the girls side, there's a new national high school record holder in the 5K on the block. After an impressive cross country and short indoor season, Natalie Cook of Flower Mound (TX) didn't skip a beat and added a 15:25.93 to her resume.
There were other solid performances that occurred this week. Check out the links below to see who the top 25 athletes were.
* Note: Times published in this ranking reflect performances from the week that were added to the MileSplit database before 11:00 a.m. EST on Monday, April 4th. Outdoor times only include FAT and wind-legal performances. Times added after that will be ad...