PITTSBURGH — Randy Rodríguez blew his first save since being elevated to the closer role, allowing two runs in the bottom of the ninth as the Giants fell to the Pittsburgh Pirates 5-4 on Monday night at PNC Park.

The Pittsburgh Pirates fell behind early to the San Francisco Giants, but made a late comeback and won 5-4 on a walk-off in the series opener at PNC Park. It is back-to-back wins for the Pirates, who won 9-5 in the series finale over the Colorado Rockies on Aug.