Lauer was scratched from his scheduled Tuesday start against the White Sox due to a minor groin injury, Todd Rosiak of the Milwaukee Journal Sentinel reports.
The Brewers expect Lauer to return to the mound for his next start. Assuming that winds up happening, Lauer should still be able to make the Opening Day roster, but it's possible he'll be on a reduced pitch count for his first turn in the rotation if he's not quite fully built up with his workload.