"I still can challenge myself against the best players," he said.

Passengers, individually and in various classes, could challenge airlines' offerings against the Federal standard.

But he openly challenged the general, a major American ally in the campaign against terrorism.

He challenged not only his lengthy detention but also the merits of the case against him.

Led by state and city pension funds, these stockholders challenged company officials with record levels of votes against them.

"They want to challenge themselves against the best."

NBC joined the lawsuits, although they do not challenge sanctions against any of its programs.

Year by year, more women were willing to face such invective and challenge the odds against them.

But his lawyers challenged the evidence against him.

Team up with another player in the same store to challenge against another pair of players across the online network.