(2/15/2013) Nationals manager Davey Johnson told MLB.com on Friday that he plans on giving Chris Marrero a serious look this spring but admits his chances of making the 25-man roster are slim. Marrero could serve as the backup first baseman in Washington but Tyler Moore is expected to fill that role. Marrero did not play in the majors last season after tearing his left hamstring last winter. "My heart goes out to him, because I thought he was getting his feet wet and I thought he did a good job," Johnson said. "Then, he had that severe hamstring injury [during winter ball] and basically lost most of the year."