Alexander Zverev, Casper Ruud fail for 2nd year in a row as ATP Acapulco remains unpredictable burial ground for top seeds

Alexander Zverev, Alex de Minaur, Casper Ruud and Alejandro Davidovich Fokina, the top four seeds at this year's Mexican Open in Acapulco, have all been ousted from the ATP 500 hardcourt event.