In the final battle of the Battle of Sekigahara, the 'western' army was the first to gain an advantage and Sakon took the lead and fought bravely, but he was shot from the flank by Nagamasa KURODA's firearm unit and made a temporary retreat (it is also said that he died at this time).
関ヶ原の戦い本戦においては、最初は西軍有利に進み、左近も自ら陣頭に立ち奮戦するが黒田長政の鉄砲隊に横合いから銃撃され負傷、一時撤退する（この時、死亡したとも）。