After positive results on doping products in the 2008 Tour de France and the 2008 Summer Olympics, he received a suspension for two years, later reduced by some months.

In 2006 Schumacher, now riding for Gerolsteiner, won the Eneco Tour of Benelux by one second after colliding with his main rival George Hincapie in the closing metres of the final stage, when time bonuses were available for the leading finishers.

Following a rule change in 2004 amphetamines were no longer on WADA's out-of-competition banned list; as a result the German federation again exonerated him.

[3] CERA was also the drug for which Italian cyclists Riccardo Riccò and Leonardo Piepoli tested positive during the Tour de France.

The German cycling federation was likely to take disciplinary action,[4] however Schumacher continued to assert his innocence and believed he was eligible to ride in the 2009 season and having a contract with Quick-Step.

[6] In January 2010, the Court of Arbitration for Sport (CAS) reduced Schumacher's ban, allowing him to ride again as from August 2010.