At one point, he talked about how difficult it was to maintain his concentration.

But she fought to maintain her concentration on the issue at hand.

Tonight the Pirates maintained their concentration for most of the game.

Today he said those public feelings were merely a way to maintain his concentration on what had to be done.

You really, really have to maintain your concentration for two long weeks there.

"We won't get much done today," she said, "because it's just too hard to maintain concentration."

Otherwise, this is a team that has been unable to maintain its concentration for long stretches.

Olson then added, "I'm not a good enough coach to have our players play bad opponents and still maintain their concentration."

When you are a goalkeeper in football, it is important to maintain your concentration at all times.

You may not be able to maintain your concentration properly, but it is no waste of time.