Challoner posted her victory in the 100-yard breaststroke with a 1:09.68. Graff clocked a 12:05.56 in the 1,000-yard freestyle, while Hilgendorf prevailed in the 100-yard freestyle at 56.94.
Hilgendorf also obtained a second-place finish, completing the 200-yard individual medley in 2:24.69.
The Titans placed third in both relays, booking times of 1:53.46 in the 200-yard freestyle and 2:04.43 in the 200-yard medley.
UW-Oshkosh hosts Beloit College in Albee Hall next Saturday (Nov. 2).
By Jon Feyen