Nationals Notes: Harper, Riggleman, Bubba Starling

Last year's top pick, Bryce Harper, hit his first professional walk-off home run last night and now has 13 homers, 11 stolen bases and a .346/.432/.623 line at Class A. Still just 18 years old, Harper provides lots of hope for Nationals fans, though the big league club is in last place with a 25-31 record. Here's the latest out of Washington:

• Nationals manager Jim Riggleman told Bill Ladson of MLB.com that he isn’t worried about his job security, though he’s in the last year of his contract.
• Frankie Piliere of FOX Sports hears that the Nationals have zoned in on high school outfielder Bubba Starling with the sixth overall pick (Twitter link).
• In case you haven't heard about the toolsy two-sport star, check out my piece on Starling from a couple weeks ago.