"I felt a little discomfort on my second at-bat, but I wanted to stay in the game," Barajas said.
In the sixth, Barajas singled to drive in Ike Davis with the Mets' first run of the game and pulled up in between first and second.
"I didn't feel it swinging on deck, but on my swing, I felt it," Barajas said.
One batter later, Barajas ran to second on Jeff Francoeur's fielder's choice, which is when manager Jerry Manuel and trainer Ray Ramirez went out to check on him and decided to take him out of the game.
"This is the first time I've ever had an oblique injury," Barajas said, adding that, "I consider myself a quick healer, so I'll see where we are on Tuesday."
For the moment, Barajas is considered day to day, and he is hopeful that it's nothing more than that.
"I'm feeling a lot better," he said. "Standing here, I'm not feeling a sharp pain or any discomfort. Turning side to side, I can feel it."
As for his prognosis, only time will tell.
"I can't go upon past injuries because I've never had this before," Barajas said.