Cardiff RFC

Context: In 1990, the unofficial Welsh championship was replaced by a league structure involving promotion and relegation. Cardiff competed in top flight but could only manage a fourth-place finish in 1990-91, and exited the Cup at the quarter-final stage. The season did involve some highlights however, such as beating league runners-up and Cup champions Llanelli 43-0 at the Arms Park and beating league champions Neath 18-4 away in the last game of the season.  1991-92 was possibly the club's worst-ever season, beset with disagreements between coach Alan Phillips and manager John Scott. Cardiff crashed out of the Cup before the quarter-final stage and lost at home to Maesteg and Newbridge in the league. Their final league finish was ninth, which would have led to their relegation but the WRU decided mid-season to switch to a 12-team Premiership, therefore saving Cardiff and Maesteg from relegation. Both Scott and Phillips resigned following the season.  Australian Alex Evans took over at Cardiff as coach for the 1992-93 season, bringing in former Arms Park legend Terry Holmes and famous ex-Pontypool front-row member Charlie Faulkner as assistants, and helped a turnaround in the club's fortunes, winning their first seven matches of the season and 20 of their first 22 to top the league in the new year. This run came to an end on 23 January; they were knocked out of the Schweppes Cup by St Peter's, who were fourth from bottom of Division Four. The Blue and Blacks only lost four league games all season though, but were unlucky to be competing against Llanelli in the league, who won the double and were considered the best club team in the UK after beating Australia 13-9.  In 1993-94 they slid back to fourth in the league but won the SWALEC Cup (renamed from Schweppes Cup for sponsorship reasons) by beating Llanelli, who'd won the tournament for the last three years running. The score in the final was 15-8, with tries from Mike Rayer and club captain centre Mike Hall and kicks from fly-half Adrian Davies. In 1994-95 Cardiff won the final league title of the amateur era in Wales, as well as reaching the semi-finals of the Cup before going down 16-9 to Swansea.  With professionalism dawned a new era at Cardiff RFC. It allowed them to sign legendary outside-half Jonathan Davies back from rugby league, and another major change was that there would be a European Cup, sponsored by Heineken, containing teams from France, Ireland, Wales, Italy and Romania (England and Scotland did not join for another year). Cardiff progressed to the knock-out stages in November by drawing with Bordeaux-Begles and beating Ulster. December saw the end of the Alex Evans era, as he departed to return home to Australia. Terry Holmes took charge of the club, and in his first full match the Blue and Blacks beat Leinster away to progress to the first Heineken Cup final. The game was played at Cardiff Arms Park in front of a crowd of 21,800, where despite 18 points from the boot of Adrian Davies, Cardiff were beaten 21-18 by Toulouse after extra time.  Cardiff, despite not losing a league game under Holmes, were runners-up on the domestic front as well, finishing level with Neath on points but coming second on try count. After the end of the 95-96 season Peter Thomas invested money into the club allowing them to sign Rob Howley, Dai Young back from rugby league, Leigh Davies, Gwyn Jones and Justin Thomas for the cost of around PS2million. Internationals Mark Ring, Steven Blackmore and the half-backs that had started the Heineken Cup final, Andy Moore and Adrian Davies all departed.  Despite all the new signings, Cardiff lost their first three games of the season, and the 1996/97 season was in many respects worse than the year before - Cardiff were knocked out in the Heineken Cup semi-finals by eventual champions Brive, and in the Welsh Premier Division they fell to third, behind champions Pontypridd and Llanelli. However, after Alex Evans returned to head up the coaching team, that season did lead to some silverware, as Cardiff beat Llanelli 36-26 in the semi-final and Swansea 33-26 in the final of the SWALEC Cup. Grzegorz Kacala and Tony Rees, both forwards part of the Brive team that knocked Cardiff out of the Heineken Cup and went on to win it, were signed for 1997/98 along with Wales internationals Steve Williams and Spencer John (Gareth Thomas also arrived in December from Bridgend).  Despite Cardiff's difficulties, compounded by those of the national team, Howley and Young were both chosen to go on 1997 Lions tour to South Africa. Howley had to return home early due to injury and neither of the two Cardiff players started a Test match.  In the 1997/98 season, Cardiff were Wales's sole representative in the quarter finals of the Heineken Cup, and were beaten away in rematch of the previous year's quarter-final, by Bath, who would go on to win the tournament. However, their domestic cup campaign ended before the quarter final stage, losing 24-9 to Ebbw Vale, and they finished runners up to Swansea in the League. Following this season, Alex Evans left Cardiff for Australia for the second time and Terry Holmes was put back in charge.  Cardiff and Swansea had proposed the formation of a British league, containing the top division English clubs, the two Scottish regional sides (Edinburgh and Glasgow) and four Welsh clubs (seeing as Cardiff had got further than any other Welsh club in every Heineken Cup so far, Swansea were the league champions and they represented the two largest urban areas in Wales, it was assumed two of these clubs would be Cardiff and Swansea).  Both the RFU and the English clubs had agreed to this, but the WRU refused due to an ongoing legal battle with the English clubs over the negotiation of commercial rights (which would lead to the English clubs not participating in the 1998-99 Heineken Cup). Instead, the WRU demanded all top-flight clubs sign 10-year loyalty agreements, where they were guaranteed top-flight status and committed themselves to staying within the Welsh league structure.  Cardiff and Swansea refused to sign these agreements and were expelled from the Welsh Premier Division. The Allied Dunbar Premiership (the English league) teams announced that two teams would have a rest weekend every week allowing them to play friendlies against Cardiff and Swansea. Cardiff's first home match of the season was against Saracens, who'd finished second in the Allied Dunbar Premiership the season before. Cardiff won 40-19 in front of a crowd of 10,021, larger than the entire combined attendance of the Welsh Premier Division that weekend. The club went on to win all their home games, but fell to defeat ten times on their travels.  Although Cardiff and Swansea were both expelled from the Welsh League, they were allowed to continue to compete in the SWALEC Cup against Welsh opposition. Both teams reached the semi-finals, Swansea were to play Cross Keys and Cardiff Llanelli. In the week prior to the game, Cardiff chairman Peter Thomas spoke to the players following a training session, where he emphasised the importance of winning the game, describing it as "the biggest game in the club's history". Cardiff lost 39-10 in a match chief executive Gareth Davies described "The worst performance by a Cardiff side I have ever seen." Six days later, it was announced Terry Holmes would stand down as coach at the end of the season, and Pontypridd and Wales assistant coach Lyn Howells would take charge on a two-year contract.  Swansea went on to beat Llanelli 37-10 in the cup final, but the rebels were still forced to sign loyalty agreements and return to Welsh domestic setup, now including Edinburgh and Glasgow. CANNOTANSWER

Question: Why was the Welsh championship replaced by a large structure in 1990?
Answer: Cardiff competed in top flight but could only manage a fourth-place finish in 1990-91, and exited the Cup at the quarter-final stage.