Career
Landsberg, a doubles specialist, competed in 21 Grand Slam men"s doubles tournaments over the course of his career. He also played mixed doubles in five of those events, the 2000 French Open and every Wimbledon Championship from 2000 to 2003. His best result in the mixed was making the quarter-finals of the 2002 Wimbledon Championships, partnering countrywoman Åsa Svensson.
In the men"s doubles he twice reached the third round, the first time being his Grand Slam debut, at the 2000 Australian Open.
His second appearance in the third round appearance came in the 2002 United States Open, with Tom Vanhoudt. He made his final Association of Tennis Professionals World Tour appearance in the 2007 Swedish Open and now coaches Finnish tennis player Harri Heliövaara.
Doubles: (6).