The Yankton Bucks used a big third quarter last night to defeat Brookings 62-42 at the Summit Activities Center. Matthew Mors paced Yankton with 21 points and Dylan Prouty came off the bench and connected on his first four three-point shots to finish with 12 points. Second-ranked Yankton is 9-2 overall and will play at Sturgis Saturday afternoon as part of a girls and boys varsity doubleheader.