 Complete the following phrase:  OSullivan withdrew from the first ranking event of the season, the Shanghai Masters, citing back problems for which doctors had advised him not to travel. He also chose not to enter the invitational Pot Black tournament. He made the final of the Grand Prix, but lost 69 against Marco Fu. During the Northern Ireland Trophy, he set a new record by compiling five centuries in a 52 win over Ali Carter. This also included his seventh official competitive 147 maximum break. OSullivan went out of the tournament in the next round, having lost against Fergal OBrien. On 2 December 2007, he won a fourth consecutive, and record seventh total, Premier League Snooker title, by beating John Higgins in the final by a score of 74. On 15 December 2007, OSullivan compiled his eighth maximum break in competition, in the deciding frame of his UK Championship semifinal against Mark Selby at Telford, equalling Hendrys record. In doing so, he also became only the third person in professional competition to compile a maximum to win a match. Hendry had made the first against OSullivan in the 1997 Charity Challenge final, and Mark Williams had made the second, at the Crucible in the first round of the 