Leon is out of the lineup Wednesday against the White Sox, Pete Abraham of The Boston Globe reports.
Christian Vazquez will substitute in behind the plate for Leon, who had started three of the previous four games. Manager John Farrell's continued usage of the catching timeshare makes it difficult to predict what Leon's workload will look like any given week, but both backstoppers are still worth owning in AL-only leagues until one emerges as the clear top option.