Baltimore Orioles first baseman Ryan Mountcastle has been placed on the injured list after suffering a broken fourth metatarsal bone in his left foot during a game against the San Francisco Giants. Manager Craig Albernaz expressed concern over the situation, stating, "It's tough," but did not provide a timetable for Mountcastle's return. The injury occurred when Mountcastle stumbled while running from first to second base. He has been performing well, hitting .286 with one RBI in eight games this season, although he had limited playing time due to competition for the first base position. Last season, he appeared in only 89 games due to a hamstring strain. Additionally, outfielder Tyler O'Neill is sidelined with a concussion after experiencing dizziness and dehydration. There was also positive news regarding catcher Adley Rutschman, who is dealing with left ankle inflammation but received encouraging results from his MRI exam.