World No. 1 Mark Selby and former world champion Mark Williams both came from way behind on Wednesday to set-up a quarterfinal meeting in the Masters.

Selby was 1-5 behind against fellow Englishman Stuart Bingham before winning five frames in a row for a 6-5 victory at London's Alexandra Palace. Selby belatedly found some form with contributions of 57, 86 and 68 helping him level the match at 5-5. Williams also came from 1-4 down to beat Matthew Stevens in all-Welsh clash.