PULLMAN, Wash. (Interstat) — Northwestern’s defense dominated in a 19-0 victory over Purdue on Saturday at Martin Stadium, handing the Boilermakers their first shutout loss. The Wildcats held Purdue to just 259 total yards and forced two turnovers, including a key fourth-quarter interception by linebacker Mac Uihlein. Northwestern quarterback Preston Stone threw two touchdown passes to Griffin Wilde and Hunter Welcing. The Wildcats improved to 4-2, while Purdue, which used two quarterbacks to no avail, fell to 2-4.