Dolan was facing off against the perennial player; who has nine-darters always hit against him in James Wade. He stepped up to the oche and produced magic on the Emerald Isle; hitting a double start nine-darter where you start on the requisite double then hit a nine-darter from there.
It is one of the hardest feats to achieve and the Northern Irishman was the first to do so, view it below:
https://twitter.com/OfficialPDC/status/1179365536968400898