| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 48.48 | Burton, Lorenzen (2015) (Olive Branch, MS) | MS 6A State Meet(MS), 2015-05-09(#1) |
| B-400 | 2 | 48.83 | Magee, Cruz (2016) (Mccomb, MS) | MS 4A State Meet(MS), 2015-05-09(#1) |
| B-400 | 3 | 49.44 | Trotter, Johnny (Meridian, MS) | East Mississippi Classic(MS), 2015-04-11(#1) |
| B-400 | 4 | 49.55 | Collins, Joesph (2016) (Wingfield, MS) | MS 5A State Meet(MS), 2015-05-08(#1) |
| B-400 | 5 | 49.57 | Thomas, Alfred (2015) (Florence, MS) | MS 4A State Meet(MS), 2015-05-09(#2) |
| B-400 | 6 | 49.85 | Burdette, Steven (2016) (Senatobia, MS) | MS Division 2-1A, 2A and 4A(MS), 2015-04-16(#1) |
| B-400 | 7 | 49.87 | White, Tyshauwn (2017) (Madison Central, MS) | MS Region 2-6A(MS), 2015-04-25(#1) |
| B-400 | 7 | 49.87 | Seck, Mamadou (2016) (Horn Lake, MS) | MS 6A State Meet(MS), 2015-05-09(#2) |
| B-400 | 9 | 49.88 | Miles, Leon (2016) (Vicksburg, MS) | Fertile Crescent Classic(LA), 2015-05-16(#2) |
| B-400 | 10 | 49.90 | Parker, Tylon (Tupelo, MS) | USATF Junior Olympics National Championships 17-18(FL), 2015-08-02(#27) |
| B-400 | 11 | 49.91 | Goodman, Zacharey (2017) (Greenville Weston, MS) | MS Region 2-6A(MS), 2015-04-25(#2) |
| B-400 | 12 | 49.92 | Tucker, Travis (2017) (Senatobia, MS) | MS 4A State Meet(MS), 2015-05-09(#3) |
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| | | See more performances for B-400 | | |
