The Cleveland Cavaliers (also known as the Cavs) are a professional basketball team based in Cleveland, Ohio. They began playing in the National Basketball Association (NBA) in 1970 as an expansion team and won their first Eastern Conference Championship in 2007After a long residency atColiseum at Richfield (1974–1994) The team currently plays their games at Quicken Loans Arena (formerly called Gund Arena) (1994–present.