Peter Sippel is a German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 football referee in the Fußball-Bundesliga

Fußball-Bundesliga

The Fußball-Bundesliga is a professional association football league in Germany. At the top of Germany's football league system, it is the country's primary football competition. It is contested by 18 teams and operates on a system of promotion and relegation with the 2. Bundesliga...

.

From 2004 until now Peter Sippel has refereed quite a few European matches, mainly UEFA Cup

UEFA Cup

The UEFA Europa League is an annual association football cup competition organised by UEFA since 1971 for eligible European football clubs. It is the second most prestigious European club football contest after the UEFA Champions League...

 matches and qualifiers.
He refereed in the UEFA Cup

UEFA Cup

The UEFA Europa League is an annual association football cup competition organised by UEFA since 1971 for eligible European football clubs. It is the second most prestigious European club football contest after the UEFA Champions League...

 1st round, 2nd leg tie between Standard Liége

Standard Liège

Royal Standard de Liège, commonly referred to as Standard Liège Royal Standard de Liège, commonly referred to as Standard Liège Royal Standard de Liège, commonly referred to as Standard Liège (Dutch: Standard Luik [], German: Standard Lüttich , is a Belgian football club from the city of Liège....

 and Everton

Everton F.C.

Everton Football Club are an English professional association football club from the city of Liverpool. The club competes in the Premier League, the highest level of English football...

, which Standard Liege won 2-1, going through 4-3 on aggregate. Everton manager David Moyes

David Moyes

David William Moyes is an association football manager and former player, currently managing English Premier League club Everton. He was the 2003, 2005 and 2009 League Managers Association Manager of the Year...

 was unhappy at the fact that Sippel did not send off Liege's Steven Defour

Steven Defour

Steven Arnold Defour is a Belgian footballer who plays as a midfielder for FC Porto.-Racing Genk:Defour had been with KV Mechelen since 2002....

after a couple of bad tackles.