Tymoshenko, a fierce rival of president Victor Yanukovych, is serving a seven-year jail sentence for abuse of office and faces another trial on tax evasion charges.

CNN: May 2, 2012 -- Updated 0958 GMT (1758 HKT)

Wary that Musharraf could revive the corruption cases she fled, Bhutto also wants him to drop charges against her and scores of other politicians, including Nawaz Sharif, another former premier and fierce rival plotting a comeback.

NPR: Bhutto Stakes Her Future on Power-Sharing Deal

Almost his only critic has been Dominique de Villepin, a former prime minister and fierce personal rival, who now plans to set up his own party on the right.

ECONOMIST: The French voters blow a raspberry at their president

Negredo netted his second from the spot before Manu del Moral completed the rout to set up a last-four clash with either Atletico Madrid or fierce rival Real Betis.

CNN: Chelsea's Hazard sent off for kicking ball boy

Durand joined the company in January 1995 just as Lupron was facing fierce competition, from Zeneca's Zoladex, a lower-cost rival.

FORBES: Magazine Article

While they have both just celebrated 800 years of scholarly study, the key attribute Oxford and Cambridge universities share is a fierce pride - and a powerful urge to put one over on their rival.

BBC: The Oxford versus Cambridge gloat race

But the rival parties have yet to make a reconciliation agreement stick, after nearly two years of fierce division.

ECONOMIST: The Gaza Strip

CanWest is also on the verge of obtaining a 50% stake in the National Post, the Globe's fierce two-year-old rival.

FORBES: Split screen

His main rival, Senator John McCain, was thought to have damaged himself, especially in Virginia, with a fierce attack on Pat Robertson and Jerry Falwell, the icons of the Christian right.

ECONOMIST: Bush bounces back