The running back and defensive back went to a number of camps and 7on7 tournaments across the country, but nothing was materializing.
For many prospects, coaches say they want to see the first three games before they make a decision on offering.
All it took Blue, though, was his first game of the 2012 season.
After helping the Lancers cruise to a stunning win over Anaheim Servite, Blue talked with San Diego State assistant coach Tony White over the weekend, and the Aztecs jumped on board first, offering the two-way standout.
"I had been talking with them for a while, then had they stopped talking to me, so I hadn't heard from then in a while," said Blue. "Then I got a message from them and I called Coach White and he offered me."
Blue, who had a big game offensively for the Lancers in their season opener, said the offer came on the defensive side of the ball.
"They offered me as a defensive back, as a corner," said Blue. "I'm cool with that because I think I'd rather play in the secondary. I could play in the slot, but I like defense."
Blue is hoping this gets things going in his recruitment.
"Wyoming just asked for my transcript and San Jose State, Colorado State and Duke have been talking with me too," said Blue. "I've been talking with Colorado a lot too so I'm waiting for them to offer."
The Buffs offensive coordinator, Eric Bieniemy, is a Bishop Amat alum.
In the meantime, Blue is thrilled to have an early option.
"Hopefully more will come, but I'm really relieved," said Blue.
Blue ran for 108 yards on 15 carries and a touchdown in the Lancers season opening win on Friday.
Bishop Amat will take on Chino Hills this weekend in their second game of the season.