Rookie outfielder Bryce Harper was moved to third in the lineup, part of a series of moves that dropped Espinosa from second to sixth in the order. (Andrew Harnik/The Washington Times)
Washington Nationals' Bryce Harper eyes the ball during batting practice before the game against the Arizona Diamondbacks at Nationals Park in Washington on Tuesday, May 1, 2012. (AP Photo/Susan Walsh)
Nationals outfielder Bryce Harper doubled Saturday night for his first major league hit. He has gone 1 for 3 in each of the past two games, both Washington losses. He'll make his debut at Nationals Park on Tuesday night against Arizona. (Associated Press)
Washington Nationals' Bryce Harper hits a RBI sacrifice fly during the ninth inning of his major league debut against the Los Angeles Dodgers on Saturday, April 28, 2012, in Los Angeles. (AP Photo/Mark J. Terrill)
Washington Nationals left fielder Bryce Harper warms up prior to their baseball game against the Los Angeles Dodgers on Saturday, April 28, 2012, in Los Angeles. (AP Photo/Mark J. Terrill)
Rookie Bryce Harper will patrol center field for the Nationals this season, but just when he will be promoted from Triple-A Syracuse is difficult to predict. (Andrew Harnik/The Washington Times)
"I'm a guy that wants to play every single day and get better," outfielder Bryce Harper said of starting the season at Triple-A Syracuse. (Associated Press)
Bryce Harper, 19, is expected to patrol center field in Washington for perhaps the next decade once the Nationals summon him from Triple-A Syracuse. (Andrew Harnik/The Washington Times)
Washington Nationals' Bryce Harper sits on the bench against the Detroit Tigers during a spring training baseball game in Viera, Fla., Sunday, March 18, 2012. Harper was 1-for-5 with four strikeouts and a double. (AP Photo/Paul Sancya)
Washington Nationals' Bryce Harper bats against the New York Yankees during a spring training game in Viera, Fla., Thursday, March 15, 2012. (AP Photo/Paul Sancya)