Shaw is out of the lineup for Sunday's game against the Nationals.
Shaw went 1-for-6 with an RBI and a run scored in the Cubs' first two games of the season, but he'll cede right field to Michael Conforto in the series finale. While Seiya Suzuki (knee) is on the shelf, Shaw appears to be the preferred option in right field against left-handed pitching, but Shaw and Conforto could operate in more of a timeshare versus righties.