Bryce Harper hits a double for his first hit as a major league player against the Los Angeles Dodgers, Saturday, April 28, 2012, in Los Angeles. Harper hit a double over the centerfielder's head in the seventh inning and then hit a sacrifice fly in the ninth for his first RBI.

Bryce Harper gets a standing ovation in his first at-bat at Nationals' Park on Tuesday, May 1, 2012.

After intentionally being hit by a pitch thrown by the Phillies' Cole Hamels, the rookie showed up the veteran by stealing home plate later that inning. It was his first major league stolen base.

After a game in May, Bryce Harper took out his frustration by slamming a bat against a clubhouse wall, which promptly bounced back and hit the rookie in the face. The result was stitches and a pretty sizable bandage on his forehead.

Bryce Harper acknowledges the crowd after hitting his first major-league home run during the third inning of a game against the San Diego Padres, May 14, 2012, in Washington.

Bryce Harper was voted to his first All-Star game during his rookie season despite starting the year in the Minor Leagues.

After a game in Toronto - where the legal drinking age is 19 and not 21 - a 19 year-old Harper was asked if he would join his older teammates for a post-game drink. The rookie replied with the soon-to-be famous one-liner: "That's a clown question, bro."

Bryce Harper rounds first base for his solo home run during the fifth inning of a baseball game with the New York Mets at Nationals Park on Sunday, Aug. 19, 2012, in Washington. Harper also launched a two-run shot in the fourth inning of the Nationals 5-2 win.

Bryce Harper breaks his bat after striking out during the 11th inning of a game with the Atlanta Braves at Nationals Park on Monday, Aug. 20, 2012, in Washington. The Nationals won, 5-4, in 13 innings.

In the middle of a slump, Harper offered some advice to a reporter who asked if he was "over-anxious" at the plate.

Bryce Harper looks on as first base coach Trent Jewett argues with first base umpire C.B. Bucknor after Harper grounded into a double play, spiked his helmet and then was ejected by Bucknor in a game against the Miami Marlins, Wednesday, Aug. 29, 2012, in Miami.

Bryce Harper reacts after crossing home plate on a solo home run, next to St. Louis Cardinals catcher Yadier Molina in the third inning of Game 5 of the National League Division Series on Friday, Oct. 12, 2012, in Washington. The Nationals would eventually lose the game, and the series.