| Time | Date | Name | Meet |
|---|---|---|---|
| 45.22 | Dec. 6, 2014 | Christoph Eckard | Wooster Invitational |
| 45.25 | Dec. 7, 2013 | Christoph Eckard | Wooster Invitational |
| 46.47 | Dec. 1, 2012 | Christoph Eckard | Wooster Invitational |
| 47.31 | Nov. 16, 2012 | Christoph Eckard | Ashland University Invitational |
| 47.36 | Oct. 27, 2012 | Christoph Eckard | Notre Dame (Ohio) vs. Malone, Lewis, West Virginia Wesleyan |
| 47.59 | Oct. 26, 2012 | Christoph Eckard | Defiance vs. Malone, Mount Union |
| 48.48 | Oct. 13, 2012 | Christoph Eckard | Denison vs. Malone |
| 49.60 | Feb. 17, 2012 | Royce Kantner | Appalachian Swimming Conference |
| 50.17 | Dec. 3, 2011 | Royce Kantner | Grove City Winter Invitational |
| 50.75 | Oct. 29, 2011 | Royce Kantner | West Virginia Wesleyan vs. Malone, Oberlin |
| 52.59 | Feb. 18, 2011 | Collin McArdle | Appalachian Swimming Conference |
| 54.86 | Feb. 17, 2011 | Collin McArdle | Appalachian Swimming Conference |
