MileSplit Staff Mar 13, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Improvement Rankings: Highlighting the top Mississippi Boys 300m Hurdles performers this Outdoor Season compared their best results from 2025. Most Improved - 300 Meter Hurdles Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -17.18 Kemarion Walker Wilkinson County High School 2027 1:05.00 47.82 2 -9.21 Demarion Buxton Quitman High School 2026 55.56 46.35 3 -8.86 Joshua Fleming J. Z. George High School 2028 55.20 46.34 4 -8.55 James Warfield Vicksburg High School 2028 53.84 45.29 5 -8.38 Dominick Daniels Senatobia High School 2028 51.73 43.35 ...