| Event | Rank | Mark | By | Meet |
| B-400 | 1 | 48.07 | Orange, Carlton (2015) (Memphis University, TN) | TN Div 2 Championships(TN), 2015-05-22(#1) |
| | | National Elites above. State Elites below | | |
| B-400 | 2 | 48.49 | Lacey, Mike (2015) (Montgomery Bell Academy, TN) | TN Div 2 Championships(TN), 2015-05-22(#2) |
| B-400 | 3 | 48.87 | Barrett, Bryce (2017) (Dobyns Bennett, TN) | TN 3A Section 1(TN), 2015-05-09(#1) |
| B-400 | 4 | 48.90 | Ailshie, Bryce (2015) (Dobyns Bennett, TN) | TN 3A Section 1(TN), 2015-05-09(#2) |
| B-400 | 5 | 49.01 | Harris, Darryl (2015) (Pearl Cohn Magnet, TN) | TN Div 1 A-AA Championships(TN), 2015-05-22(#1) |
| B-400 | 6 | 49.09 | Sholl, Chase (2016) (Rhea County, TN) | TN Div 1 AAA Championships(TN), 2015-05-22(#1) |
| B-400 | 7 | 49.18 | Tanner, Simpson (2015) (University School, TN) | TN Div 2 Championships(TN), 2015-05-22(#3) |
| B-400 | 8 | 49.21 | Choate, Bryce (2015) (Tellico Plains, TN) | TN Div 1 A-AA Championships(TN), 2015-05-22(#2) |
| B-400 | 9 | 49.26 | Austin Iii, Calvin (2017) (Harding Academy, TN) | USATF World Youth Trials(IL), 2015-07-01(#8) |
| B-400 | 10 | 49.68 | Norment, Naaman (2015) (Houston, TN) | TN Div 1 AAA Championships(TN), 2015-05-22(#3) |
| B-400 | 11 | 49.79 | Poindexter, Armond (2018) (Memphis Central, TN) | TN 3A Section 4(TN), 2015-05-09(#1) |
| B-400 | 12 | 49.88 | Hughes, Xavien (2017) (Germantown, TN) | TN 3A Section 4(TN), 2015-05-09(#2) |
| B-400 | 13 | 49.92 | Bishop, Corey (2015) (Tennessee, TN) | TN 3A Section 1(TN), 2015-05-09(#3) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for B-400 | | |
