Complex sentence: The 2003--04 season was trophyless for TNS: they were runners-up in the League of Wales to Rhyl and were losing finalists in the Welsh Cup, also to Rhyl.
Split into simpler sentences: The 2003--04 season was trophyless for TNS. They finished runners-up in the League of Wales to Rhyl and were beaten finalists in the Welsh Cup, also to Rhyl.