Adam Laroche

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Washington Nationals' Adam LaRoche tosses his bat after one of his two strikeouts against the Baltimore Orioles in Baltimore on Friday, June 22, 2012. The first baseman went 0-for-4 as the Nats lost 2-1. (AP Photo/Patrick Semansky)

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Washington Nationals first baseman Adam LaRoche acknowledges the fans after his four RBI led the team to a 5-3 victory over the New York Mets on Wednesday, June 6, 2012, in Washington. (AP Photo/Alex Brandon)

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Adam LaRoche's two-year contract expires at the end of this season. We'll know that the Nationals have arrived if negotiations keep D.C. sports fans awake at night. (Associated Press)

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Bryce Harper touches home as he scores on a sacrifice fly by Adam LaRoche. Harper was 2 for 4 with a triple, scored three runs and drove in two. (Associated Press)

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Washington Nationals first baseman Adam LaRoche acknowledges the crowd between the seventh and eighth innings against the Pittsburgh Pirates on Wednesday, May 16, 2012, in Washington. LaRoche recorded his 1,000th career hit during the seventh inning on a double to deep right, scoring Jesus Flores, Bryce Harper and Ryan Zimmerman. (AP Photo/Haraz N. Ghanbari)

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Nationals first baseman Adam LaRoche rounds the bases after hitting a two-run homer in the eighth. It was LaRoche's second home run in as many games. (Associated Press)

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First baseman Adam LaRoche had just three home runs, 15 RBI and a .172 average when his first season with the Nationals ended with shoulder surgery. (Associated Press)

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ASSOCIATED PRESS First baseman Adam LaRoche signed a two-year, $16 million deal with the Nationals before last season, but he appeared in just 43 games in 2011.

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Nationals slugger Michael Morse was a career utility player until taking over at first base for Adam LaRoche, who suffered a season-ending shoulder injury. He hit his 31st home run of the season Tuesday against Florida. (Associated Press)

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ASSOCIATED PRESS First baseman Michael Morse forced himself into the All-Star picture after taking over for injured Adam LaRoche.

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Nationals first baseman Michael Morse has been a steady power source since taking over for injured Adam LaRoche. He homered twice Wednesday night against St. Louis. (Associated Press)

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Washington Nationals first baseman Adam LaRoche will have season-ending shoulder surgery. In 43 games this season, LaRoche hit .172 with two home runs and 15 RBI. (Associated Press)

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ASSOCIATED PRESS Though Nationals first baseman Adam LaRoche is hitting just .172, he is bothered more when he's required to make throws than when he is swinging.

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ASSOCIATED PRESS Nationals first baseman Adam LaRoche entered Thursday night's game batting .202. He was dropped from fourth to fifth in the lineup for the series finale at Atlanta.

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ASSOCIATED PRESS Nationals first baseman Adam LaRoche entered Thursday night's game batting .202. He was dropped from fourth to fifth in the lineup for the series finale at Atlanta.