Most Improved Mississippi Boys 400m Marks Compared to 2025

Mar 13, 2026

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Improvement Rankings: Highlighting the top Mississippi Boys 400m performers this Outdoor Season compared their best results from 2025.

Most Improved - 400 Meter Dash

Comparing 2026 season to 2025 season

Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-11.96	jacob Bacallao Richland High School	2028	1:10.15	58.19
2	-11.50	Dalton Nix Pass Christian High School	2026	1:11.40	59.90
3	-10.50	Connor Miller Corinth High School	2029	1:08.45	57.95
4	-9.68	Jaydon Sheriff Northwest Rankin High School	2027	1:10.83	1:01.15
5	-8.85	Marcus Britton Tupelo High School	2027	1:04.86	56.01