Clayton kept pace with Van Gerwen till 11-11, before Van Gerwen fired in back-to-back 11-dart legs. The world number one then extended his lead to 15-11.
Van Gerwen missed eight match-darts in the 27th leg to win the game and Clayton managed to win one more leg. The two-time world champion then claimed victory with a 66 checkout to defeat the Welshman.
The prize fund breakdown for this tournament can be found
here.
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Grand Slam of Darts.
Friday November 16 (1900 GMT) Dimitri Van den Bergh (94.28) 9-16 (98.58) Mensur Suljovic
Simon Whitlock (95.03) 15-16 (95.86) Gerwyn Price
Saturday November 17 (1900 GMT) Michael Unterbuchner (88.52) 6-16 (100.48) Gary Anderson
Jonny Clayton (95.88) 12-16 (101.65)
Michael van Gerwen https://twitter.com/OfficialPDC/status/1063909190177980416