(Beijing, September 15) The "Good Luck Beijing" 2007 Beijing BG Triathlon World Cup opened this morning at the Changping Triathlon Venue at the Ming Tombs Reservoir. In the first stage of competition in swimming, Sara McLarty, No. 29 of the United States, emerged the winner with 18:46.00. With this result she also won the top prize for swimming, plus a money reward of 500 US dollars. China's Zhang Yi finished 11th.