Yankees manager Aaron Boone spent part of his Tuesday news conference going over his options at first base. The Yankees figure to keep two on their Opening Day roster, Greg Bird and probably Tyler Austin. Bird is the starter if he, knock on wood, finally stays healthy, and the Yankees still think the left-handed hitter can be a star who could bat all season between righties Giancarlo Stanton and Aaron Judge. Meantime, Austin, a right-handed hitter who mashes left-handed pitching, seems to be in good shape to win the backup job if he, too, knock on wood again, can stay healthy. After that, Boone mentioned backup catcher Austin Romine and rookie third baseman Miguel Andujar, if the latter makes the club, as emergency options. And if someone gets hurt, the Yankees have an outfielder who are learning first base to consider. Left-handed hitting prospect Billy McKinney started playing first after the 2018 season in the Arizona Fall League, and one scout told NL Advance Media that he looked pretty good there.