 Selected in the 1979 NHL Entry Draft by the Buffalo Sabres, Haworth was traded to the Washington Capitals in 1982.After five seasons in Washington, he was dealt to the Quebec Nordiques in 1987 in the trade that brought Dale Hunter to the Capitals.After one season in Quebec, Haworth opted to play in Switzerland for four seasons, winning two Swiss championships with SC Bern, before retiring from active play.