Westbrook, out of Squalicum High, joins Federal Way's D'Jimon Jones as in-state pledges in WSU's 2016 recruiting class.
"Knowing I'd be in good hands with a great education (was important). They have a tendency to produce next level players and I love the campus and everything about the school," said Westbrook.
Westbrook chose Washington State over an offer from Hawaii along with interest from UW and Boise State.
"I think (WSU) liked that I can go deep and that I can also make a play after the catch," said Westbrook.
Westbrook was credited with 29 catches for 554 yards and 11 TDs in his junior season by statewidestats.com. He helped lead Class 2A Squalicum to its first ever state tournament berth this past season.
Westbrook unofficially visited Washington State earlier this year and plans to take another unofficial there this summer. He said he forged a strong bond early on with WSU outside receivers coach Graham Harrell and area recruiter Eric Mele.
"I called Coach Mele to tell him I was committing, he was really excited about it," said Westbrook. NOTABLE NOTE: