INDIANAPOLIS -- The switch surrounding the switch from Indianapolis Colts center A.Q. Shipley to undrafted rookie Jonotthan Harrison by coach Chuck Pagano after Week 5 took many by surprise because Shipley’s play wasn’t hurting the team.

General manager Ryan Grigson, addressing reporters for the first time this season, said the move was performance-based.

“Jonotthan is being evaluated like everybody else, but we like the direction he’s headed,” Grigson said. “We have a little bit of a different vantage point, a little different perch from everyone else. We watch them in practice, every little thing they do. On those guys, I think we’re in a good situation. We have three quality guys. We have quality depth in a spot where everyone thought the sky was falling. I feel really good about the center position. I think Jonotthan is doing a heck of a job. He’s an undrafted rookie snapping to Andrew Luck, and I think he’s doing well.”

Khaled Holmes began the season as the starter, but was injured on the opening drive of the preseason opener against the New York Jets. He hasn’t played since.

“I think you look at how it transpired, Khaled is doing a great job, gets hurt,” Grigson said. “He has nine snaps in terms of his evaluation and practice. The games are the bulk of what you go off of. If he gets another opportunity, I’m sure he’ll do well. He has to stay out the training room. I told him that. Tha’s the bottom line.

“A.Q. came in and played quality snaps for us, but we’re up front with these guys. Ultimately it’s up to them. We’re always trying to get to a champion level; a winning level. That’s what we’re aspiring. It’s not that we’re heartless or cold. That’s the expectation, and if you’re going to be part of the train, you have to hop on and keep paving that way.”