Worth noting

• Charlie Morton's penultimate rehab start for Triple-A Indianapolis has been pushed back from Sunday to Monday due to the Thursday birth of his and wife Cindy's first child. It means Morton will target his six innings or 90 pitches at Pawtucket in Indianapolis, instead of pitching at Buffalo.

• Infielder John McDonald (back and elbow) will depart Sunday to begin a very detailed rehab assignment with Indianapolis: He will play five innings at second base on Monday, seven innings at shortstop on Tuesday, take a day off, then play nine at short and at second on consecutive days. After that, he will be reevaluated to determine the next step.

• Pirates manager Clint Hurdle admitted the possibility of short-term roster changes to gear up for the Monday-Tuesday Interleague Play games in Detroit.

"We're discussing that now. We're mapping it all out," Hurdle said.

Tom Singer is a reporter for MLB.com and writes an MLBlog Change for a Nickel. He can also be found on Twitter @Tom_Singer. This story was not subject to the approval of Major League Baseball or its clubs.