Los Angeles Dodgers manager Dave Roberts expressed his concern for pitchers amid MLB preparing to enforce their rules against foreign substances, and praised Philadelphia Phillies star Bryce Harper. #DodgerBlue #Dodgers #BryceHarper Subscribe: https://www.youtube.com/c/dodgerblue1958 Twitter: @DodgerBlue1958 | https://twitter.com/dodgerblue1958 Instagram: @DodgerBlue1958 | https://instagram.com/dodgerblue1958/ Facebook: http://facebook.com/Dodgerblue1958 Website: https://dodgerblue.com/