"He's progressing very well, but there are some things that are still concerning on his test," Phillies head athletic trainer Scott Sheridan said. "So while we're here, we're going to do some things with him. We'll do some exercises and things to challenge Chooch. Things on the field we'll work on the next few days."
Ruiz had one previous concussion in 2004.
"Our goal here is to put him back when he's ready," Sheridan said. "Worst-case scenario is you take a player that has a concussion and he comes back too early. It's not like he's a position player. You know it just as well as I do -- the first day he goes behind the plate, the first pitch is going to be a foul ball right off the mask. It's going to happen. We're going to give him the best chance for him to come back and be successful."