Nationals third baseman Ryan Zimmerman received a cortisone injection in his aching right shoulder before he went 2 for 4 this afternoon in the Nationals' 2-1 loss in Baltimore, a procedure Zimmerman plans to repeat when necessary in order to regain his effectiveness and stay off the disabled list for the remainder season. Zimmerman's offensive performance, which included his first RBI in 11 games, snapped a 5-for-48 slump and gave Zimmerman his first multiple-hit game since June 8. The cortisone shot eliminated the pain caused by inflammation in Zimmerman's AC joint and allowed the Nationals' cornerstone player to feel like himself again.