ใครคือรองแชมป์ด้วยชัยชนะ 8 จังหวะ?
Who was the runner-up with the margin of victory of 8 strokes?
df = pd.DataFrame(columns=['runner_s__up', 'margin_of_victory'])
df[df['margin_of_victory'] == '8 strokes']['runner_s__up']