Busey finished fourth in the last week's WCC Championship and led the team with a 73.43 stroke average while playing in all 10 events during the season.
Sumner was second with a 73.97 stroke average. She also played in all 10 events though missed the final round of the league tournament due to injury.
That duo helped the team to six top-three showings, including a victory in the Pat Lesser Harbottle Invitational in October.
During the season, Busey had six top 10 finishes and Sumner five.