Surpassing his first season in Washington may have felt like a burden for Gio Gonzalez, if only the notion of burdens fit into Gonzalez’s worldview. He is not the kind of person who dwells or worries. Let expectations soar. Let Major League Baseball investigate him. He will overwhelm an opposing lineup, drill a curveball through the chilling wind and smile as he floats around the bases.

Wednesday night, in the first start of his encore season, Gonzalez keyed the Washington Nationals’ 3-0 victory over the overmatched Miami Marlins with six shutout innings and the second home run of his career. Before 26,269 hunched against the cold, Gonzalez’s performance continued the giddy beginning to 2013 at Nationals Park, which has included two more curtain calls than runs scored by the visitor.

Behind opening day ace Stephen Strasburg, Gonzalez and their reworked bullpen, the Nationals have opened the season with two straight shutouts — becoming just the 13th team to accomplish that since 1900 — while allowing the underwhelming Marlins lineup only seven hits. Up next is Jordan Zimmermann, the 26-year-old right-hander who posted a 2.94 ERA last year.

“It’s not really hard to fathom,” said reliever Ryan Mattheus, who tossed a scoreless seventh. “I look at this staff, and that’s what I expect. I see one through five, and then the bullpen, the seven guys we got, I think there’s going to be a lot of shutouts.”

New closer Rafael Soriano added a pinch of drama Wednesday, allowing a hit and walk to bring the tying run to the plate with one out in the ninth before securing his second save with a deep fly to center. Bryce Harper notched two more hits, including an eighth-inning double that nearly knocked over the right field wall.

The Nationals will lose a game soon. Two games in, as pitchers clobber homers and Denard Span cruises around center field and Soriano untucks his jersey, it just remains a bit difficult to see how.

“The two guys we fired out there, that can happen any given night,” first baseman Adam LaRoche said. “They’re dominant. That’s what they do. It’s nice to know we got three others behind them that are right there, toe-to-toe.”