General Casey has been up to stiff challenges before.

And tonight they gave the Russians a stiffer challenge than expected.

It still faces stiff challenges, including two games with Dallas, but today was a time for celebration and relief.

That is a stiff challenge for foreign-born students weak in English.

But the port is at a pivotal moment that offers huge promise and a stiff challenge.

But it still faces stiff legal challenges, and Congress has restricted its scope.

The newcomers to the book-club business face a stiff challenge.

Republicans are expected to face a stiff challenge to their decadelong control.

By the mid-1990s, the company had managed to survive the stiff challenges from other chains.

He has no financial support to take the stiff challenge in life - 'Cancer disease'.