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USA Swimming Zone Teams
| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 3:25.85 | Dec. 8, 2016 | Fritz, Zimmer, Berkoff, Mahns | Missoula Aquatic Club | Speedo Winter Junior Championships - West |
| 3:27.77 | Jan. 15, 2016 | Fritz, Zimmer, Berkoff, Mahns | Missoula Aquatic Club | Washington Open |
| 3:34.90 | Nov. 7, 2015 | Fritz, Zimmer, Berkoff, Mahns | Missoula Aquatic Club | MT MAC Fall Invitational |
| 3:36.53 | March 16, 2014 | Berkoff, Zimmer, Mason, Eberhard | Missoula Aquatic Club | Speedo Champions Series - Federal Way |
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