| Athlete | Team | Best | |||||
|---|---|---|---|---|---|---|---|
| 1 | Thomas, Michael | Washington |
47.58
5/13-14 |
47.95
5/13-14 |
48.09
3/17-18 |
48.30
4/14-15 |
49.12
4/23 |
| 2 | Oliver, Isaiah | Colorado |
47.58
4/12 |
48.15
5/6-7 |
48.15
5/13-14 |
48.34
3/25 |
