Grim, at San Joaquin Delta College, gave his verbal to the WSU coaches on Monday, becoming the 13th known pledge for WSU's 2017 class. He'll arrive to the Palouse in June.
What was it about WSU that made him want to give Mike Leach and Co. his pledge?
"It was everything," Grim told CF.C. "I like the program, their academics and the offense. WSU has everything I could want in a school."
The 6-0, 195-pounder first delivered the news to assistant Clay McGuire, and then spoke with Leach.
"At first, Coach Leach sounded a little surprised," Grim said. "Then he was very excited. He told me he was happy to welcome me to the family and that he's glad I can be a part of it."
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Grim signed with Nebraska as a member of the 2016 class and enrolled at the school in January. However, in late August, right before the start of the season, Grim and Nebraska parted ways and he ended up at SJDC. According to the Lincoln Journal Star, Grim left the program because it wasn't the right fit.
Despite yet visiting Pullman, the JUCO WR said he's now locked in with WSU and that he's planning on taking an official in December.
"They (WSU) have the No. 2 pass offense in the nation at the moment and that's awesome," he said. "We're not sure where I'll line up, but we'll figure it out once I get there. I can play either inside or outside. I'm comfortable at both."
Coming out of McNair High in Stockton, Calif., Grim was rated a three-star prospect by Scout.com. He was once committed to Boise State before flipping to Nebraska. His senior season, he set a California single-season record by recording 1,928 receiving yards and 34 touchdowns. So far this fall at his JC, he had four receiving scores.
WSU was his lone offer. But Grim said it was the only one he needed.
"With Washington State, I just love that the receivers are actually running routes and they pass a lot," Grim said. "When it does come down to a situation where they can't pass, they're smart and run the ball. They have a balanced offense."