Adam Kilgore reports that Stephen Strasburg, for the first time since he blew out his arm last August, has thrown a baseball. Huzzah! Of course, let’s not get too excited: Kilgore also notes that the Nationals are planning to play it very safe with Strasburg, just like they did with his teammate Jordan Zimmermann, who suffered a similar injury in 2009. Strasburg could potentially come back to the mound in September, but the timetable for his return is still up in the air, depending mostly on the pitcher’s progress during “months of lonely, hot rehab in Florida.”