When did Bayern Munich win their first competitive game under Barcelona's former manager?
2009–10 FC Bayern Munich season The 2009–10 season of Bayern Munich began on 1 July with their first training session, led by the team's new head coach Louis van Gaal. After several friendlies the first competitive game was a cup game on 1 August. The league started on 8 August.
Jack Greenwell John Richard "Jack" Greenwell (2 January 1884, in Crook, County Durham, Northeast of England – 20 November 1942, in Bogotá, Colombia) was an English footballer and manager. He served as manager of Barcelona for seven consecutive seasons, a record that has only been beaten by Johan Cruyff and later had a second spell as Barcelona manager. In 1939 Greenwell became the only non-South American coach to date to win the South American Championship when he guided Peru to their first win. He also served as a manager with CD Castellón, RCD Español, Valencia CF, Sporting de Gijón, RCD Mallorca, Universitario de Deportes and Independiente Santa Fe.