The club bought Roger Millward from Castleford on 8 August 1966 for the sum of £6,000. Rovers won the Mackeson Trophy for being the top points scorers in the Rugby League. Rovers won the Yorkshire Cup for the second year running in 1967–68, beating Hull 8–7 in the final; the first all-Hull final in 47 years. The club finished third in the league and lost 10–17 to Wakefield Trinity in the play-off final; Rovers were runners-up in the Yorkshire League and beat the Australians 27–15 with Millward scoring a hat-trick.