Montgomery is not in the lineup for Monday's game versus the Cubs.
Montgomery had made 19 straight starts, but he's managed a lowly .539 OPS with a 39.3 percent strikeout rate over that span. With a lefty in Shota Imanaga on the hill for the Cubs, the left-handed-hitting Montgomery will get a day to regroup. Luisangel Acuna will cover shortstop for the White Sox.