Sigulda (pps) The 2003-04 Viessmann Luge World Cup series in Sigulda/Latvia this weekend will begin without the 2003 overall World Cup doubles champions, Mark Grimmette/Brian Martin (USA). Grimmette/Martin, who are also two-time Olympic medallists, will have to wait until the tour’s North American swing before they begin defense their overall crown. The 32-year-old Grimmette remains sidelined due to lower back problems and the pair is hoping to make their 2003-04 World Cup debut on the 1988 Olympic course in Calgary on December 4-6.