Urawa Red Diamonds (浦和レッドダイヤモンズ, Urawa Reddo Daiyamonzu), colloquially Urawa Reds (浦和レッズ), are a Japanese professional football club based in Saitama, part of the Greater Tokyo Area. The club plays in the J1 League, which is the top tier of football in the country. Its name comes from the former city of Urawa, which is now a part of Saitama City. The name Red Diamonds alludes to the club s pre-professional era parent company Mitsubishi. The corporation s logo consists of three red diamonds, one of which remains within the current club badge.