Hernandez will be opposed by Travis Wood, who made the All-Star team for the first time last year.
"It's always good to play at home," Cubs catcher Welington Castillo said. "We just can't wait to get to Wrigley."
AP Sports Writer Will Graves and AP freelance writer John Perrotto in Pittsburgh, and AP Sports Writer Stephen Hawkins in Arlington, Texas, contributed to this report.
Jay Cohen can be reached at http://www.twitter.com/jcohenap