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Bryce Harper wins Home Run Derby at Nationals Park

Bryce Harper of the Washington Nationals and National League celebrates with Max Scherzer #31 of the Washington Nationals and the National League after the semifinal during the T-Mobile Home Run Derby at Nationals Park on Mon., July 16, 2018, in Washington, D.C.

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Last Updated Jul 16, 2018 10:56 PM EDT

WASHINGTON -- Bryce Harper has won the Home Run Derby in his home ballpark, surely making his father proud and providing another memory to Nationals fans in what could be his final season in Washington. Harper gave an uppercut fist pump after matching Kyle Schwarber's 18 homers in the championship round on the final swing of his allotted 4 minutes.

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Because he hit two homers over 440 feet, Harper got 30 seconds of extra time. He launched the winning blast on his second extra swing, holding his bat over his head and walking down the first-base line as it cleared the center-field fence. He then threw his bat in the air and pointed both index fingers toward the sky as a shower of streamers rained upon the crowd of 43,698.

The crowd favorite in his home stadium, Harper needed 13 homers to eliminate the Dodgers' Max Muncy, and he blasted his 13th to right field with about a minute left in his 4 minutes of hitting time.

The six-time All-Star arranged to have his dad, Ron, pitch to him in the annual contest on the eve of the All-Star Game. Harper responded with a performance that drew the loudest cheers of the night at Nationals Park.

Home Run Derby 2018 -- Bryce Harper

Bryce Harper of the Washington Nationals and National League celebrates with the trophy after winning the T-Mobile Home Run Derby at Nationals Park on Mon., July 16, 2018, in Washington, D.C. Harper defeated Kyle Schwarber of the Chicago Cubs and National League 19-18.

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It's been a trying season for Harper, who's hitting only .214 for the disappointing Nationals. He won a contest that many sluggers avoid, fearful it might wear them out and throw them off.

Harper can only hope this helps him get back into the swing.

The 2015 NL MVP beat Freddie Freeman of the Atlanta Braves and Max Muncy of the Dodgers before trumping the fifth-seeded Schwarber, who put the pressure on with a solid outing before Harper stepped to the plate.

Wearing a headband that resembled the District of Columbia flag and displaying a right sleeve with stars and stripes, Harper trailed 18-9 with 1:20 left before rallying. He homered on nine of his last 10 swings before entering extra time.

Hours before the session, Harper spoke excitedly about having his dad pitch to him in the contest. The 25-year-old said his father "worked his tail off every single day to provide for me and my family" and "now being able to have him throw to me in a big league ballpark is the cherry on top."

Harper advanced to the final with an astonishing spree of long-ball hitting. He trailed Max Muncy of the Dodgers 12-4 with 2:20 left, then peeled off six homers in 47 seconds before calling a timeout.

Harper returned to hit three more home runs in 22 seconds, the last of them inside the right-field foul pole.

The semifinal matchup between Schwarber and Philadelphia's Rhys Hoskins was a thriller. After stunning top-seed Jesus Aguilar of Milwaukee in the opening round, the eighth-seeded Hoskins ripped 20 long balls to put the pressure on Schwarber.

Using a late surge, Schwarber pulled one ball after another over the right field wall to squeeze out a 21-20 victory - by far the highest-scoring matchup of the night.

The fans dutifully cheered most home runs during the first round, but they saved their loudest cheers for Harper, the last player to step to the plate.

Home Run Derby 2018 -- Bryce Harper

Bryce Harper of the Washington Nationals and National League celebrates after his first round win during the T-Mobile Home Run Derby at Nationals Park on Mon., July 16, 2018, in Washington, D.C.

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After Freeman hit 12 home runs over the 4-minute span, Harper unleashed six shots of at least 440 feet and secured the victory with a drive to center long before the clock expired. As the ball cleared the wall, the left-handed hitting Harper walked out of the batter's box and thrust both arms in the air.

Freeman was the oldest player in the field at 28, and the first Braves participant since Andruw Jones in 2005.

Milwaukee's Aguilar, the NL home run leader at the break, was eliminated in the opening round by Hoskins 17-12.

Aguilar hit too many balls to straightaway center, where the wall stands over 400 feet from the plate. Hoskins pumped most of his drives into the left-field seats, where it's 336 feet down the line.

The most thrilling first-round match featured a near buzzer-beater by Houston's Alex Bregman, who fell to Schwarber 16-15. The difference was the pair of homers that Schwarber hit during 30 seconds of extra time, the reward for hitting two long balls of at least 440 feet.

Bregman -- the lone AL representative -- appeared defeated with a minute left, but he mounted a late surge and lost when his final swing produced a drive that landed at the base of the center-field wall.

Muncy advanced by defeating No. 6 seed Javier Baez of the Cubs, 16-15. Baez hit the longest shot of the Derby, a 479-footer.