Stephen Bunting feels like he is getting back towards his old self after comfortably winning Group 18 of the PDC Home Tour on Monday.
Bunting needed only to take three legs of his final match against Nathan Derry to secure top spot but did far more than that as he recorded his second 5-1 victory of the night, having already routed Kim Huybrechts.
Even then he was hard on himself after missing a handful of doubles, but his prolific scoring on the night had meant he could afford to.
The 24-year-old was set to play in Group 20 on Wednesday but will undergo minor surgery on the problem, which has ruled him out of the home-based competition.
De Zwaan will be replaced by fellow Dutchman Jermaine Wattimena in a group containing three-time PDC ranking event winner Joe Cullen, Scotland’s Ryan Murray and John Michael, who will be joining from Greece.