COVID-19 and the shift to online teaching necessitated a change in approach for English for Academic Purposes (EAP) teachers in preparing their students for university studies. This study explored how EAP instructors coped with and adapted their provision for emergency remote teaching. The study was conducted at an English-medium university in Hong Kong and a qualitative case study approach was adopted. The results revealed two overarching themes of opportunity and challenge. While the sudden shift to online teaching forced innovation and fostered collaborative learning and feedback, teachers experienced difficulties in communicating with students and monitoring their learning. The study voices teacher perspectives in delivering EAP courses online and highlights important implications for the successful delivery of future online EAP provisions. Copyright © 2021 by the authors.