BEIJING — Marco Haller won the fourth stage of the Tour of Beijing Friday in his first professional victory, though 2011 champion Tony Martin retained the overall lead with just one leg to go. Haller, a 21-year-old Austrian racing for Katusha Team, had a late burst to overtake Italian Alessandro Petacchi of Lampre-ISD Team, who had sprinted toward the finish line. Behind them in third was Stage One winner Italian Elia Viviani for Liquigas-Cannondale team. Haller and Petacchi both moved up one place after Thursday's round to 87th and 77th, respectively. The tour of Beijing is the final event of the season. — AP