Still, it's hard to figure how Grayson flew under the radar for so long. He was named league Offensive Player of the Year in 2008 after throwing for 3,090 yards and 18 touchdowns, while completing 67 percent of his throws. He's rated the No. 2 quarterback prospect in Washington and is No. 40 on Scout.com's Northwest Hot 50.
So why hasn't the Vancouver (WA) Heritage quarterback picked up any offers? That's a good question.
After outstanding performances at the Nike Football Camp in Eugene, Oregon and the Elite 11 workout last month, interest in Grayson has heated up. This weekend, Grayson came all the way across country to participate in Louisville's camp.
"You guys (Louisville) out there are going to get really lucky," said Nate Becksted, Grayson's coach. "The schools out west liked him as a sophomore and then last year we had a pretty shaky offensive line and he had to run a lot. They were just concerned about something. Most schools said they liked him but they liked other kids more."
"He attended camp at every northwest Pac-10 school and every one of them called me after camp and said they wished they hadn't offered the prospects they did because (Garrett) was the best quarterback they'd seen," Becksted said.
Grayson made the most of this trip to Louisville. Not only did he camp with the Cardinals on Sunday, Grayson took a short trip south to Knoxville to meet with Lane Kiffen at Tennessee on Monday.
"As far as Louisville, he thought it went very good," said Becksted. "He and his dad met with the head coach for about a half hour and they knew he was going to Tennessee today. All I know from Garrett is that he's supposed to call the head coach at Louisville tonight or the first thing tomorrow on his cell phone."
Louisville didn't offer Grayson a scholarship on the spot. That's probably because Texas quarterback Luke Woodley is slated to visit Louisville this week. Woodley holds an offer from Louisville and told InsideTheVille.com Monday there's a good chance he will verbally commit to the Cardinals on his visit.
"(Louisville) didn't offer but they told him he's a scholarship worthy player and as good a quarterback prospect as they've seen," said Becksted. "They've got a couple offers out to quarterbacks and haven't heard back from those players yet. The Louisville coaches called me immediately after the workout and said they were really impressed with Grayson."
What was Grayson's impression of the Cardinals? "I know Garrett was impressed with Louisville," said Becksted. "He liked the facility and he knew what type of quarterback school that it is. It's as good a quarterback school as there is in the country and he knew all of that. He was real excited about his visit and he thought camp went good."
"Louisville called and said they had a camp coming up and they really liked him," Becksted said. "They had seen him on film and they wanted to know if he could come out for camp."