In 1990 the Pesant Club Liégeois partnered with the Société du Tour de France, the organizer of cycling's flagships the Tour de France and Paris–Roubaix.
The partnership led to a more professional organization, resulting in a complete overhauling of the race course: the start and finish moved to different locations in Liège and five new climbs were included.

In the late 1990s Italians Michele Bartoli and Paolo Bettini continued a tradition of Italian victories in La Doyenne, with two wins each.
In 1997 Bartoli and Laurent Jalabert made a decisive breakaway on the climb of La Redoute, 40 km from the finish.
Both riders worked together and Bartoli broke away from the Frenchman on the steep slopes in the final kilometer of the race.
Jalabert, a specialist of the Ardennes races, finished second two years in a row but failed to win the Doyenne.
In 1999 Bartoli sought a third consecutive win, but his effort was thwarted by young Belgian Frank Vandenbroucke who controlled the race and stunned followers with his victory.

In 2005 Kazakh Alexander Vinokourov and German Jens Voigt broke away from the peloton 80 km from the end.
Although the escape seemed unlikely to stay away in modern cycling, the two riders made it to the finish ahead of the peloton, with Vinokourov beating Voigt in the sprint.

Other memorable editions were the races of 2009 and 2010.
In 2009 young Luxembourger Andy Schleck produced a solo breakaway to beat a strong field and win the race.
In 2010 Alexander Vinokourov concluded his second victory by outsprinting his breakaway companion Alexander Kolobnev.
The victory was controversial, not only because Vinokourov had recently returned to cycling after a doping ban, but also because it was suggested he had 'bought' the victory.
Swiss magazine L'Illustré published e-mail correspondence between the winner and runner-up that suggests Vinokourov paid Kolobnev €100,000 not to contest the final sprint.
Both riders were later charged with bribery by Belgian authorities.

In recent years Spanish allrounder Alejandro Valverde won four times, all sprint victories of a select group at the finish.
In 1990 the Pesant Club Liégeois partnered with the Société du Tour de France, the organizer of cycling's flagships the Tour de France and Paris–Roubaix. The partnership led to a more professional organization, resulting in a complete overhauling of the race course: the start and finish moved to different locations in Liège and five new climbs were included.
In the late 1990s Italians Michele Bartoli and Paolo Bettini continued a tradition of Italian victories in La Doyenne, with two wins each. In 1997 Bartoli and Laurent Jalabert made a decisive breakaway on the climb of La Redoute, 40 km from the finish. Both riders worked together and Bartoli broke away from the Frenchman on the steep slopes in the final kilometer of the race. Jalabert, a specialist of the Ardennes races, finished second two years in a row but failed to win the Doyenne. In 1999 Bartoli sought a third consecutive win, but his effort was thwarted by young Belgian Frank Vandenbroucke who controlled the race and stunned followers with his victory.
In 2005 Kazakh Alexander Vinokourov and German Jens Voigt broke away from the peloton 80 km from the end. Although the escape seemed unlikely to stay away in modern cycling, the two riders made it to the finish ahead of the peloton, with Vinokourov beating Voigt in the sprint.
Other memorable editions were the races of 2009 and 2010. In 2009 young Luxembourger Andy Schleck produced a solo breakaway to beat a strong field and win the race. In 2010 Alexander Vinokourov concluded his second victory by outsprinting his breakaway companion Alexander Kolobnev. The victory was controversial, not only because Vinokourov had recently returned to cycling after a doping ban, but also because it was suggested he had 'bought' the victory. Swiss magazine L'Illustré published e-mail correspondence between the winner and runner-up that suggests Vinokourov paid Kolobnev €100,000 not to contest the final sprint. Both riders were later charged with bribery by Belgian authorities.
In recent years Spanish allrounder Alejandro Valverde won four times, all sprint victories of a select group at the finish.
Liège–Bastogne–Liège