To be eligible, a student-athlete must have a 3.0 GPA and be a significant contributor.
Stemp led the Cougars with a .355 batting average and 12 stolen bases in 2016.
The lefthander is the second Cougar drafted Saturday.
Hamilton is a three-time All-Pac-12 selection and owns a WSU-record 28 saves.
Trek Stemp earned All-Pac-12 accolades after hitting .355 and stealing 12 bases.
Senior Patrick McGrath had an RBI-single in his final Cougar at-bat Sunday.
Washington State will look to take the rubber game Sunday at 2 p.m.
Damon Jones retired 11 in a row at one point and went 5.1 innings to earn the win.
The series is set for 4 p.m. starts on Friday and Saturday, and Sunday at 2 p.m.
Washington State's baseball game against the University of Washington in Yakima, Wash. Tuesday has been cancelled.
First pitch is set for 6:30 p.m. at Yakima County Stadium.
Six different Cougars recorded multiple hits Saturday.