Ryan Zrubek dropped 2.75 seconds off his 2018 personal best.
Big gains were sort of a thing when it came to the 300 Hurdles this year.
50 - yes, 50 - athletes made improvements of over two seconds.
And of those 50, four cracked a six-second improvement, and one - only one - cracked seven seconds.
Aaron Strauber was the lone 300 hurdler to clear seven seconds, with his 7.65 improvement from 2018 to 2019.
The Jefferson Academy sophomore entered the 2019 season with a personal best of 49.94, but that time didn't last long once he hit the track in 2019.
He opened his season with a 47.36 PR, then went on to drop two seconds each time he hit the track until running a 42.29 in late April. He went on to finish 17th in the 300H prelims at State.
Jesus Ortiz, Troy Silver, and Kaedan Law came in 2-3-4 with their improvements, as all three made leaps of over six seconds.
Ortiz takes the runner-up spot here with his 6.74 improvement, while Silver and Law just cracked six-seconds, with Silver making a 6.10 leap, and Law making a 6.02 leap.
Editor's Note: List compiled with the Top 200 marks from 2019.