Guerrero's 2-run HR leads Orioles over Nats 2-1

Nats' pitcher Jordan Zimmerman pitched an excellent game, but lost on one swing.

BALTIMORE (AP) - Vladimir Guerrero's two-run homer in the seventh inning spoiled Jordan Zimmermann's stellar outing and lifted the Baltimore Orioles to a 2-1 win over the Washington Nationals on Sunday.

Through the first six innings, Zimmermann (2-5) was nearly perfect, allowing just two base runners on a walk and a double in the second inning. He had retired 13 straight.

Nick Markakis singled to start the seventh and Guerrero sent an 0-2 curve ball into the left-field stands for his fifth home run of the year and a 2-1 Orioles lead.

Guerrero's home run was just the third Zimmermann has allowed in 54 1-3 innings this season.T