McEnroe had sterner challenges on the exhibition circuit last week than he got from Purcell.

But he believes the world number 15 will still provide a stern challenge when they meet each other again on Wednesday.

Even sterner challenges await for Locog and its beleaguered ticketing partner.

John Paul, though affectionate, has laid down a stern challenge in speaking out on the drug issue.

However, India continues to face stern challenges.

Enough time had passed - or enough brain cells perished - for us to seek a sterner challenge.

Later he had a sterner challenge to face, one which more closely affected his personal sense of honour.

She will get her sternest challenge from Heavenly Prize, last year's champion 3-year-old filly.

With that stern challenge, a group of high school students settled into a Boston courtroom on a recent morning.

With panting haste they plunged into the water and began to wade toward the galley, when a stern challenge brought them up standing.