Shane, with defeats over Dean McGladdery 6 - 0, Barry Jouannet, another PDC qualifer 6 - 1 and then World Grand Prix qualifer Pat Oreal 6 - 4 in the semis
Dutch star van Barneveld bounced back from three successive defeats to average 106.9 in defeating Terry Jenkins 8-4 at the M.E.N. Arena to claim his second victory of the year.
The Australian picked up his second win of the season to maintain his early push for a play-off spot in his debut campaign, although was gifted many winning legs by a profligate Lewis performance.
The duo occupy the top two positions in the Premier League Darts table after the opening four weeks, with Taylor winning all of his games and King having picked up three victories.
The 25-year-old from Stoke picked up the £6,000 title in Gladbeck with a fine performance, coming from 4-3 down to take three successive legs in winning the final.
Van der Voort celebrated three years on the PDC circuit by claiming his first title in his fourth final, having lost two previous PDC ProTour events and the 2007 UK Open final.
Baxter took leads of 4-1 and 7-4 against the Australian, but almost allowed Whitlock to grab a draw when he missed ten match darts before finally nailing double ten for the win.
Whitlock, the Ladbrokes.com World Darts Championship runner-up to Phil Taylor in the New Year, made a nightmare debut in the Premier League Darts with an 8-3 loss to the Stoke legend at The O2 last mo