The 23-year-old Herrera had appeared in Philadelphia's previous 25 games, starting 22 of them in center. He remains a work in progress at a position he didn't pick up in the Minor Leagues until last season. Primarily a second baseman, Herrera saw action in two games in center with Class A Myrtle Beach and 41 for La Guaira of the Venezuelan Winter League in 2014.
Through parts of 26 games, Herrera has committed two errors on 54 putouts.
"He's progressed really well," Sandberg said. "He went in there for defense. He's taking to it very good. Very athletic, he has very good routes, his instincts are very good. That's a tough one -- ball straight over your head with that kind of distance. But he's been very good. A lot of fun to watch, a lot of energy."
Christina De Nicola is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.