| Time | Date | Name | Meet |
|---|---|---|---|
| 49.80 | Feb. 11, 2016 | Florian Zellin | Great Lakes Intercollegiate Athletic Conference |
| 49.94 | Dec. 4, 2015 | Florian Zellin | Wooster Invitational |
| 50.02 | Feb. 8, 2013 | Florian Zellin | Great Lakes Intercollegiate Athletic Conference |
| 50.12 | Nov. 30, 2012 | Florian Zellin | Wooster Invitational |
| 51.49 | Nov. 2, 2012 | Florian Zellin | Malone vs. Edinboro |
| 51.76 | Oct. 27, 2012 | Florian Zellin | Notre Dame (Ohio) vs. Malone, Lewis, West Virginia Wesleyan |
| 51.82 | Oct. 13, 2012 | Florian Zellin | Denison vs. Malone |
| 53.73 | Feb. 18, 2012 | Royce Kantner | Appalachian Swimming Conference |
| 56.42 | Jan. 21, 2012 | Royce Kantner | Wooster vs. Malone |
| 56.52 | Dec. 3, 2011 | Royce Kantner | Grove City Winter Invitational |
| 57.50 | Nov. 5, 2011 | Royce Kantner | Malone vs. Notre Dame (OH), Urbana |
| 59.74 | Feb. 20, 2010 | Mason Geib | Last Chance Meet: Kenyon |
