 He scored one goal in 87 appearances for the Danish national team, and represented his country at the 1986 World Cup as well as three European Championships, including the triumphant 1992 European Championship tournament.Sivebæk has two sons, Christian Sivebæk the eldest of the sons, is also a professional football player.Sivebæk started his career with hometown club Vejle Boldklub in 1980.