PULLMAN — Quarterback Tyler Hilinski, a four-star prospect, signed a financial-aid agreement to join the Washington State football team in January 2015.

Hilinski will graduate from Upland (Calif.) High School this winter, then enroll at WSU and should be able to participate in spring drills with the Cougars.

As a junior last fall, Hilinski threw for 3,053 yards and 34 touchdowns and had just eight interceptions. He completed 68 percent of his passes, going 177 of 260. He also ran for 334 yards and four touchdowns. In one game last fall, Hilinski threw for 442 yards and seven touchdowns.

Hilinski, 6 feet 4, 190 pounds, is rated a four-star prospect by Rivals.com and three stars by ESPN.com and Scout.com. He is ranked the No. 106 prospect in the Western 150 and the No. 41 quarterback prospect in the country by Scout.com.

Cooper on list

Cougars defensive lineman Xavier Cooper has been added to the initial Lott IMPACT Trophy watch list of the top defensive players in the country.

Cooper, entering his redshirt-junior campaign for the Cougars, is one of 12 Pac-12 defensive players included on the 46-player list. He was one of four players added to the initial watch list Tuesday.

Cooper started all 13 games for the Cougars last season, making 50 tackles, including team highs of 13½ tackles-for-loss and five sacks. The Tacoma product also recovered two fumbles, forced two and scored one touchdown on a fumble return.

The Cougars open their 2014 season Aug. 28 against Rutgers at CenturyLink Field.