The Nationals reinstated Ryan Zimmerman from disabled list and officially moved Jayson Werth to the 15-day disabled list. Zimmerman is expected to start at third base in Pittsburgh after he missed 13 games with an inflamed right shoulder joint. The Nationals went 7-6 without Zimmerman after starting 11-4 with him. Werth will likely miss 10 to 12 weeks after undergoing surgery to repair a distal radius fracture in his left wrist. The Nationals can move him to the 60-day disabled list if they need an open spot on the 40-man roster.