Orioles manager Buck Showalter said Roberts started light batting practice work and didn't like the way things felt.
"He just doesn't feel it's moving at the pace he was hoping," Showalter said Tuesday. "I think he was just a little frustrated that it hadn't come faster."
Cooper apparently helped Tampa Bay's Evan Longoria with his hamstring troubles last year. Roberts has spoken to Longoria already.
Showalter also said that they're not talking about moving Roberts to the 60-day disabled list yet, and that the Orioles are OK with the second baseman meeting with Cooper.
"He just wants to get a feel for what he thinks and see if there's something that he or we can do differently," Showalter said.
Jeff Seidel is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.