 Complete the following phrase:  Maguire has a rivalry with Shaun Murphy. In a match at the 2004 Grand Prix Murphy was involved in having one of Maguires frames forfeited. As the match was about to begin, Maguire realised he had forgotten to bring his chalk with him. He asked referee Johan Oomen for permission to leave the arena. While he was away, Murphy spoke to the referee; the tournament director Mike Ganley was summoned, and he docked Maguire a frame for not being ready to start at the scheduled time. Maguire later won the match 52. Later that year, whilst playing in the final of the UK Championships, David Gray forgot his chalk. However, Maguire let him get it without a frame being docked. After beating Murphy in the 