Montgomery will work as an opening pitcher for the Pirates during Thursday's game against the Rockies, Colin Beazley of the Pittsburgh Post-Gazette reports.
Montgomery will be deployed as an opener for the third time this season after delivering shutout innings in both of his first two assignments. The 25-year-old southpaw has thrown 11 consecutive shutout frames, allowing just five hits and four walks while striking out 13 batters during that stretch. Carmen Mlodzinski is expected to follow Montgomery as the Pirates' bulk reliever.