That showed when Grier assessed his incredible feat throwing seven touchdown passes.
"It's all right," Grier said. "I'm just trying to keep improving."
Maybe Grier's nonchalance is a product of Messinger's belief in Grier.
"(Coach Messinger) just told me to play with confidence and don't let nobody get down, and if you make a bad play, just move onto the next," Grier said.
With weapons like Reese, Kevin Forrest, Ken Haynes, Marquel Hampton and the injured A.D. Cunningham, all it takes the SC offense is one play to make the difference.
Even as a youngster, Grier has the support of the elder playmakers.
"Our quarterback keeps progressing," Reese said. "He's going to be a good one in a couple years.
"I love Kentre, man. We're like best friends. When he first came in, I just put in the role that I was going to put him on my back."
The transition to a new quarterback wasn't easy, but the results have been outstanding, Forrest said.
"It's kind of rough but seeing how young he is and seeing what he can do is kind of unbelievable, so I give him his props and see what else happens," he said.
It seems Grier is ready for the next challenge, too. He's not ready to throw it in cruise yet.
"We've got a few wins, but we got two more games ahead of us, then we've got the playoffs to work harder for," he said.