Terry Jenkins reached the quarter-finals for the first time after coming from behind to beat James Wade 4-3.
He did so, though, only after Wade had snatched defeat from the jaws of victory.
Wade, runner-up to Taylor in this year's World Matchplay, looked to be cruising at 3-1 up - and although Jenkins won the next set, the 23-year-old was soon only one leg away from going through.
However, the Hampshire professional then self-destructed, almost seeming to give up in the face of dogged persistence from his opponent who needed to do nothing special to get back into it.
Jenkins knew his opportunity had arrived when they entered the deciding set - and Wade cut a sorry figure as `The Bull', from Herefordshire, continued the improvement he has made this year.