Greer was getting it done on the field, but knew he had work to do in the classroom.
Once he got his grades up, a Pac-12 offer came and Greer immediately jumped on it.
On Thursday night, Oregon State offered Greer, and by the time the evening was done, Greer was a Beaver.
"I'd been talking to them for the past month and they were recruiting me hard my junior year, but I had to fix up my grades," said Greer. "They got my transcripts last week and they offered me on Thursday. I knew they would offer me and I knew that would be the place I played my college football."
So as the offer was extended, Greer told the Oregon State coaches he was in.
"I knew right away, and I told them I wanted to be a Beaver," said Greer. "As soon as they offered me, I committed to them."
Greer, who's playing in the CalState Game this week, said he was so excited about the commitment, he skipped out on dinner.
"We had a team dinner, and I couldn't even eat, I was so excited," said Greer. "It's a real big relief for my family and friends and they're all really happy about it. I worked really hard."
Greer said he'd be going to Oregon State to play rover, able to play either safety or linebacker in college if needed.
Now, he'll get to start thinking about his future in Corvallis.
"I'll be taking my official visit on January 11th to Oregon State," said Greer. "I'm playing here with Jordan Villamin and Jermel Walker and we're able to bond together. Tomorrow, we'll play in the game and put Oregon State on the map."