Lake Placid (pps) Mark Grimmette/Brian Martin (USA), defending champions in the Viessmann Luge World Cup, have to push back their return to racing. Due to a herniated disc in the lower back of Mark Grimmette, the two-time Olympic medallists cannot participate in the third event of the Viessmann Luge World Cup in Calgary/CAN (December 4-6). Grimmette and Martin are now looking to make their season’s debut a week later at the Viessmann Luge World Cup on the Olympic course in Park City (December 11-13).