Luke Litter remains on course for a record-breaking seventh nightly win in the Premier League after thrashing Jonny Clayton in the Birmingham quarter-final. The back-to-back world champion is on a hot streak of form in the weekly roadshow, winning the last three events in Liverpool , Aberdeen and Leeds . That saw him match his own record of six nightly wins and he has a seventh in his sights after beating Jonny Clayton 6-0 in his opener. Victory over the Welshman secured Littler’s top spot in the league table, guaranteeing himself top seeding in the play-offs at the O2 in a fortnight. He dismantled Clayton in a quickfire quarter-final that lasted just over 10 minutes, completing victory with an impressive 115 checkout. Littler will meet familiar foe Luke Humphries in the semi-final after the defending champion also enjoyed a whitewash in his opening match, hammering Stephen Bunting 6-0 to enhance his hopes of finishing in the top four.…