Ireland encountered stiff resistance from a gritty Argentina side as they were made to work for a 28-17 victory in a hard-fought Test at Aviva Stadium on Saturday.
However, an injury to Ireland backrow Sean O’Brien marred Joe Schmidt’s side’s hard-fought win.
O’Brien left the field in the 38th minute, clutching his arm and Schmidt confirmed that he had broken it and will require surgery. Schmidt described the Leinster backrow as ‘devastated’.
Having just returned from a long injury layoff, the fresh setback casts doubt on O’Brien’s participation in next year’s Rugby World Cup in Japan.