PHILADELPHIA, PA -- On a day in which Major League Baseball paid its respect to the great Jackie Robinson, Jayson Werth provided the heroics while J.A. Happ turned in a quality start for Philadelphia.

Werth collected the walk-off single in the bottom of the ninth, which was his only hit of the day, and Happ threw seven solid innings as the Phillies defeated the Washington Nationals in their series finale, 2-1, Thursday afternoon at Citizens Bank Park.

With runners on the corner and no outs in a 1-1 game, Werth came up to bat against Washington reliever Scott Olsen following Chase Utley and Ryan Howard singles, and he fisted an inside fastball up the middle that easily scored Utley for his first walk-off hit of the season.

"Our bats were pretty silent all day," Phillies manager Charlie Manuel said. "They did a good job keeping us off the scoreboard, but it's hard to keep this group down for an entire game. We adjusted our gameplan late in the game, and we were able to come back and get the win."

Happ rebounded after a miserable first start of the season by allowing only one run in seven innings on 10 hits, one walk and six strikeouts. Giving up six runs against Houston last Friday, Happ kept the Nationals inside the park in his 2010 home debut.

He didn't start out too well as he found himself in trouble immediately from the start as he loaded the bases with one out with a fielder's choice by Cristian Guzman, and back-to-back singles by Ryan Zimmerman and Adam Dunn. Happ fell behind Josh Willingham 3-1 before giving him a free pass, putting Washington up 1-0.

However, Happ struck out Ivan Rodriguez and got Adam Kennedy, who's in the top-5 in the MLB in hits, to groundout to Utley for the final out of the inning. He went onto pitch six scoreless innings, throwing 101 pitches while 72 were strikes.

"I felt a lot better than I did in my first start," said Happ. "I was able to locate all my pitches, but my fastball was really strong. It's my best pitch, and when it's on, that usually when I pitch my best."

Shane Victorino hit his first home run of the season in the eighth inning against Nationals' reliever Tyler Clippard, a solo shot to left field to tie the ball game at one. Victorino batted lead-off for the first time this year with Jimmy Rollins getting the day off.

Washington sent 21-year-old rookie phenom Stephen Strasburg to the mound for his second start of his career, and he tossed seven shutout innings, striking out 11 hitters, walking three and allowing only two base hits.

Strasburg was pretty upset when he was taken out of the game after the seventh.

"I could have gone another inning or two," said Strasburg. "My pitch count wasn't very high, and I felt great. I told (the coaching staff) that I wanted to go out another inning, but they didn't budge. It's a learning curve that I'm going to have to get past, this isn't college anymore where I can say when I want to come out, this is big time. I need to earn my respect."

The Phillies will open a weekend series with another divisional foe as the second place Florida Marlins will be in town for an early important three game set. Jamie Moyer (1-0, 0.00) will go up against Josh Johnson (1-0, 4.50) in the opener.