Bryce Harper of the Nationals headlines the eight participants in this year's T-Mobile Home Run Derby in Washington, and he'll be joined by the Brewers' Jesus Aguilar, the Phillies' Rhys Hoskins, the Braves' Freddie Freeman, the Dodgers' Max Muncy, the Astros' Alex Bregman and two Cubs, Javier Baez and Kyle Schwarber.