http://mlb.mlb.com/news/article.jsp?...s_mlb&c_id=mlb

Outfielder Bryce Harper -- the No. 2 prospect in baseball, according to MLB.com -- will be called up from Triple-A Syracuse on Saturday to make his Major League debut for the Nationals at Dodger Stadium, according to the Nationals' public relations Twitter account.

The transaction will complement the club's placement of third baseman Ryan Zimmerman on the 15-day disabled list.