Gregory's mark of 185-06 is the best in Maryland history and also is an NCAA Regional qualifying mark.
Kelsey had a career-best time of 9:15.48 in the event, which was also an IC4A-qualifying time.
Also at Duke, Jillian Anwah met the NCAA Regional mark with her throw of 156-07 in the discus to place second.
In Florida, Toni Aluko had a mark of 5-08.75 in the high jump to finish fourth and a posted a triple jump of 38-02.00 to place sixth.
The triple jump was Aluko's best of the season, while the high jump mark tied her season-best. The jump has already qualified the senior for both the NCAA Regional and ECAC Championships.
In the 110-meter hurdles, Dominic Berger had a season-best time of 13.76 to place ninth. The senior has also already qualified for both the NCAA Regional and ECAC Championships in the event.
In the 100 meters, Earl Gray posted a time of 10.60, which makes him tenth on the Maryland all-time list.
The Terps return to action next week at the Onesty/Abramson Invitational in their final tune-up before competing in the ACC Outdoor Championships the following weekend.