Playing in the Texas League in 2011, Adams was recognized as that league's Most Valuable Player and the Cardinals Minor League Player of the Year with a .300 batting average, 32 home runs and 101 runs batted in. He made his Major League Baseball (MLB) debut with the St. Louis Cardinals in 2012. In his rookie season in 2013, Adams hit 17 home runs in 296 at-bats. Adams has in MLB for the Atlanta Braves and the Washington Nationals, and won the 2019 World Series with the Nationals.