Montgomery allowed four runs over 5.2 innings Thursday against the A's. He struck out five, walked one and gave up two home runs.
It was the most runs Montgomery had given up since May 18, and his no-decision snapped a two-start win streak for him. The rookie allowed multiple home runs in one game for the first time in his career. Over his last three starts (18.2 innings), the left-hander has allowed six runs with 18 strikeouts and six walks.