[2] Festina Team director Bruno Roussel defended Moreau by saying it was another member of the support staff who had deceived the cyclist and caused him to take the anabolic steroids.

Moreau, along with two other members of the Festina team, Laurent Brochard and Armin Meier, admitted taking EPO after being arrested[4] and were ejected from the race.

[5] Confessing alongside the other team members - except Richard Virenque - Moreau served a six-month suspension before returning to racing.

[8] In the 2000 Tour de France, Moreau finished a career best with fourth place behind Lance Armstrong, Jan Ullrich and Spanish Festina teammate Joseba Beloki.

This was the first time he finished as highest placed French rider at the Tour and it fueled hopes that he could win the race some day.

In 2001 and still riding for Festina, Moreau won the prestigious stage race the Critérium du Dauphiné Libéré.

[11] Several weeks later, he won the prologue of the 2001 Tour de France and put on the yellow jersey as leader of the general classification.

[14] Festina choose to end its sponsorship of a cycling team so Moreau joined Crédit Agricole.

During the 2005 Tour de France, he went very close to wearing the yellow jersey in the first days in the Alps but fell back to finish in the 11th place.

In the Critérium du Dauphiné Libéré, Moreau finished second on the general classification behind Leipheimer and won the king of the mountains competition.

[25] Moreau started the 2007 Tour de France in good form and was in the top ten of the general classification after the first mountain stages of the Alps.

In September 2007, Moreau, citing financial reasons, announced that he was leaving AG2R Prévoyance and was signing a one-year contract with Agritubel for the 2008 season.