Once, a manager was on a difficult call with a customer.

"I think it is sometimes a very difficult call for the police," she said.

After ringing off, she steeled herself to make the second more difficult call.

One of the officials' most difficult calls remains the quarterback-in-the-grasp call.

"It was a very difficult call for all of us," he said.

I decided to allow myself to procrastinate for once and return the most difficult call last.

This was probably the most difficult call I ever made, definitely.

The most difficult calls are in hard news and investigative stories.

The authorization of a deceased artist's work is a difficult call.

"On the merits, this should not be a difficult call to make."