Armenia's Levon Aronian reached a quick draw with Peter Svidler of Russia at the penultimate round of the Sinquefield Cup and retained his top position alongside two other grandmasters.
Currently, half the field can still win the tournament. Sergey Karjakin (Russia) is now tied for fourth place with Magnus Carlsen (Norway), half a point below Aronian, Vishy Anand (India) and Maxime Vachier-Lagrave (France).
The Armenian will face Carlsen in the final round of the tournament.
If all games end in draws on the last day, or if the three current leaders all win their games, there will be no playoff.