BEREA, Ohio (AP) — Following an unexpected delay, the Terrelle Pryor Project has resumed.

Attempting to shift from NFL quarterback to wide receiver with the Browns, Pryor returned to practice Saturday after missing more than one week with a hamstring injury. The former Oakland QB impressed the Browns early in training camp with how quickly he adjusted to his new position, but coach Mike Pettine said Pryor’s physical tools will only take him so far.

“He is not guaranteed a (roster) spot, but I also wouldn’t write him off,” Pettine said. “He is still in-between. That send of urgency now is ramped up. It is a tighter window to see it. We are certainly not going to just hand him a spot based on potential. He’s gotta show us, but what he’s showed us so far has been encouraging.”

Pryor knows he can’t do anything about what the coaching staff or general manager Ray Farmer plan to do when it comes to finalizing Cleveland’s 53-man roster, so why bother trying.

“I don’t worry about anything I can’t control,” Pryor said. “I just go out and make plays when I can and try to help the team to the best of my ability. I don’t really worry about what the coaches decide. I just know that if I give my all, that’s my best chance.”

Pryor seemed to be a natural during the first part of camp, when he stood out among Cleveland’s wide receivers because of his size (6-foot-4, 225 pounds) and speed. He was a quick study in running routes, and Pryor said it didn’t take him long to learn how to best use his physical gifts to get separation from cornerbacks who tried to cover him tightly.

“I’m finally starting to understand how to use my strength, my upper-body strength, my legs and stuff like that,” he said, “so moving the guys isn’t really a big deal.”

Pryor said he needs to re-fine his routes and he’s been trying to pick up some tips by watching Browns receiver Brian Hartline, a former teammate at Ohio State.

Pryor doesn’t think he has a lot of catching up to do now that he’s back. He stayed sharp while he was sidelined by taking mental reps and staying engaged during film work and meetings.

Pryor missed Cleveland’s exhibition opener, but expects to play Thursday night when the Browns host the Buffalo Bills. The teams will practice against each other on Monday and Tuesday in Rochester, New York.