Penguins free agency and trade news, Pirates return to PNC Park

Hour 4 with Joe Starkey, Paul Zeise, and Bob Pompeani: The Pirates have a huge stretch of games coming up and will determine if they're buyers or sellers at the deadline. The Cubs are at the bottom of the NL Central and look like sellers. The Penguins signed Mac Hollowell to a one-year deal and Matt Grzelcyk.