Slovakia's Matej Toth made a decisive break 2km from the line to add Olympic gold to his world title as he won the 50km race walk on Friday. In punishingly hot conditions, the Slovak overtook defending Olympic champion Jared Tallent of Australia at the end of a race that saw a host of walkers pull up or be disqualified. Toth timed 3hr 40min 58sec, Tallent taking silver at 18sec, with Japan's Hirooki Arai a further 8sec adrift to bag bronze. France's Yohann Diniz went through 30km in 2:11.29. Canada's Evan Dunfee, who was leading the chasing pack, had made up 12 seconds on Diniz in the preceding 5km, and suddenly the Frenchman pulled up, allowing the Canadian to take the lead. Diniz was soon back up and walking, but struggling, on the loop down the Pontal beach area southwest of central Rio de Janeiro.–AFP