van Barneveld and Dennis Priestley. 28 – Michael van Gerwen successfully defends his Open Holland title (a non-ranked PDC event) beating Colin Osborne in the final. Van Gerwen defeated James Wade, Alan Tabern, Dennis Ovens and Wayne Jones in the earlier rounds. 29 – Peter Manley wins the Open Holland Masters PDPA Championship in Schediam. He beat James Wade 3–0 in the final with a 108.33 average. Manley had earlier beaten Rico Vonck, John Ferrell, Michael van Gerwen, Sean Palfrey, Wayne Mardle and Terry Jenkins en route. May 3 – The final matches in the group stage of the Premier League are complete and the semi-final line-up is confirmed as Taylor v Priestley and Jenkins v Barneveld. Roland Scholten finishes bottom of the table. 8 – Phil Taylor hits the fourth televised nine dart finish of his career at the 2007 International Darts League 9 – Tony O'Shea matches Phil Taylor's feat from the previous day with another nine dart finish at the IDL – making it the first televised event with two nine-darters. 10 – The group stages at the IDL are completed and BDO World Champion Martin Adams and former World Champion Phil Taylor both fail to qualify. 11 – PDC World Champion Raymond van Barneveld goes out of the IDL to Tony O'Shea leaving Adrian Lewis as the last PDC player in the competition. 11 – PartyPoker.com are announced as sponsors for the Grand Slam of Darts in November and the prize fund is increased to £300,000 (higher than both the Premier League and the BDO World Championship). 12 – Mark Webster and Gary Anderson win through to the final of the IDL to make it an all WDF-affair and guarantee themselves places in the prestigious Grand Slam of Darts tournament in November. 13 – Gary Anderson wins his first major televised tournament claiming the 2007 International Darts League title in the Netherlands beating Mark Webster in the final. 14 – The Winmau World Masters (BDO) tournament is controversially moved to the weekend of 16–18 November causing a clash with the new Grand Slam of Darts event which was scheduled to feature players from both the PDC and BDO. 20 – Phil Taylor adds the new US Open to his list of titles beating Raymond van Barneveld in the final. 20 – Mark Webster wins his home country's Welsh Open beating Scott Waites in the final. Trina