Anderson threw three nine darters in practice before win over De Zwaan

The two-time world champion informed Arjan van der Giessen that he had thrown three nine-darters in the practice room. In addition, Anderson missed the double 12 for a fourth nine darter.
Earlier this week of course, Anderson hit a nine darter in his win over Joe Cullen but by the looks of it had potential to hit more.
Click here for more information about the World Matchplay. The prize fund breakdown for this tournament can be found here.
https://twitter.com/ArjanvdGiessen/status/1023302056847781888