Dodgers Manager Dave Roberts will begin parceling days off to his veteran position players Thursday in San Francisco. He expects to sit left fielder Carl Crawford and may also rest third baseman Justin Turner. Roberts has not decided between Scott Van Slyke or Trayce Thompson as Crawford's replacement. Thompson replaced Crawford in the field in the sixth inning of the first two games of the season, part of the team's plan to keep Crawford's legs fresh. If Turner does not play, Roberts would use Enrique Hernandez or Charlie Culberson at third base.