MileSplit Staff Mar 27, 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: Top Tennessee Boys 800m marks compared to their season’s best performances from 2025. Most Improved - 800 Meter Run Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -53.40 Christian Simpson Kenwood High School 2026 3:19.35 2:25.95 2 -26.79 Kam Lloyd Millington Central High School 2027 2:28.90 2:02.11 3 -26.50 Xavier Fulfer Marion County High School 2028 3:32.00 3:05.50 4 -25.55 Brody Dykes Gibbs High School 2029 2:45.54 2:19.98 5 -24.80 KeShawn Echols Overton High School 2028 2:40.94 2:16.14 6 -21.97