it is your/sb's responsibility to take action next :
They've offered me the job, so the ball's in my court now.
it is your/sb's responsibility to take action next :
They've offered me the job, so the ball's in my court now.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005