Fans of Bundesliga side Mainz unveiled banners slamming former coach Jurgen Klopp's decision to join Red Bull in Saturday's 2-0 home loss against RB Leipzig. Using a play on words with Klopp's last name, the home fans asked "Are you crazy?" and used a quote from their side's former boss: "I like people until the point they disappoint me." A larger banner, in big red letters, asked Klopp if he had "forgotten everything we gave you?". A former player at the club, Klopp coached Mainz for seven years, taking the team to the top flight for the first time before moving to Borussia Dortmund and later Liverpool.