Harper injury could be a problem for the Nationals

Bryce Harper left the Washington Nationals game Saturday in the first inning after slipping on first base, and it’s unknown at this time how much time he might miss. He’s fourth in the majors in slugging percentage (.614), fifth in batting average (.326) and OBP (.419), and tied for ninth in HR (29).

What would a prolonged injury mean for the Nationals?

Since Harper made his debut on April 28, 2012 -- the start of Harper's rookie year, the Nationals have the second-most regular-season wins in baseball (they're 526-397) behind the Dodgers.

But they're just 5-9 in the playoffs and still haven't won a postseason series since the 1981 NLDS, when they were the Expos (the only postseason series win…