In season 2003–04, the club won the Welsh Premier League, qualifying for the Champions League qualification rounds (though they lost 7–1 on aggregate, to Skonto Riga of Latvia in the first qualifying round), and were winners of the League Cup and Welsh Cup, although they lost the final of the FAW Premier Cup 4–1 to Wrexham. Rhyl completed a famous quadruple by rounding off the season with a 6–0 win against Halkyn United in the Final of the North Wales Coast Challenge Cup. However, these feats were later tainted by the revelation that leading scorer Andy Moran had been taking the banned stimulant Nandrolone throughout the season. Rhyl won many games with late goals, leading to widespread rumours that other players were also taking the drug. Moran was stripped of his Golden Boot as a result, although the results were allowed to stand.