ALVA, Okla. – The East Central University volleyball team secured a clean sweep over Northwestern Oklahoma State University with a 3-0 victory on Thursday night at Percefull Fieldhouse. With the win, ECU improved its GAC record to 7-7 while Northwestern dropped to 5-9. Set one saw both teams trade points early before the Tigers broke away with a 5-0 scoring run to establish a 12-7 lead that later extended to 20-12. ECU maintained their distance and ultimately closed out the set with a convincing 25-18 win. The Tigers took the early lead in the second set, but the Rangers put…