ST. LOUIS -- Rookies in the postseason, the Washington Nationals played like poised veterans.
The Nationals escaped a bases-loaded jam in the seventh inning, pinch hitter Tyler Moore blooped a two-out, two-run single in the eighth and Washington beat the defending World Series champion St. Louis Cardinals 3-2 Sunday in an NL playoff opener.
The Nationals, who had never come close to making the playoffs since moving from Montreal for the 2005 season, overcame a wild start by 21-game winner Gio Gonzalez.
Reliever Ryan Mattheus needed just two pitches to bail out the Nationals in the seventh with St. Louis ahead 2-1. Tyler Clippard worked around an error in the eighth and Drew Storen saved it with a 1-2-3 ninth.
The NL East champion Nationals led the majors with 98 wins this season, and brought postseason baseball to Washington for the first time since 1933. The Nats go for a 2-0 series lead Monday when Jordan Zimmermann opposes Jaime Garcia.
The Cardinals made it to the best-of-five division series by beating Atlanta in the wild-card matchup Friday. But St. Louis wasted a 10-strikeout gem by Adam Wainwright, failing to capitalize enough on Gonzalez's career high-tying seven walks and frustrating its towel-waving fans.