Maddy Ortman dropped 4.26 seconds from her 2018 best.
To top this list you needed to make a leap of over six seconds, and even then, four hurdlers did that this season. The view from the top required a nearly seven-second improvement.
Taking the cake was Kaydin Moore.
The Custer County sophomore nearly dropped a full seven seconds from her 2018 best.
6.99 to be precise.
A year ago she was a 58.11 300 hurdler. This year she went from 57.83 in her first outing, all the way down to 51.12. Nearly seven seconds in a year is already huge, and she dropped over six seconds in a season.
A close second went to Abigail Strickland.
A year ago she had a season best of 57.77 in her one and only attempt in the event. Clearly, she made the decision to be a 300 hurdler, because she came out swinging in 2018, running 52.17 in her first attempt this season, and she dropped that all the way down to 50.85 by the end for a grand total of a 6.92 leap.
The only other two within the Top 200 from 2019 to crack the six-second improvement barrier were Geneva-Grace Douillard and Marguerite Johns.
Douillard dropped 6.40 seconds, while Johns dropped 6 on the nose.
Editor's Note: List compiled with the Top 200 marks from 2019.