For the 2007–08 season, at the age of 17, Kroos was promoted to Bayern's senior team. He made an astounding start to his Bundesliga career, making his debut for Bayern on 26 September 2007 in a 5–0 defeat of Energie Cottbus and twice assisting Miroslav Klose goals within 18 minutes of his appearance as a substitute. At the time of his debut, Kroos was the youngest player ever to represent Bayern in a professional match at old, a record since broken by David Alaba in 2010.
