Cape Town - Chelsea is turning the title race into a procession, with only surprising Southampton in touching distance of the leaders ahead of their home match against West Bromwich Albion on Saturday.
Chelsea holds a four-point lead and has played arguably its four toughest matches, away games at Everton, Liverpool, and the two Manchester clubs, without losing.
Its biggest title rival, defending champion Man City, is eight points behind in third.
"We don't have the title in the bag," goalkeeper Thibaut Courtois said.
"We are trying to win with every game that is possible but there will be still a long way to win the title."
Top scorer Diego Costa should be refreshed after being rested by Spain over the international break.
Chelsea host West Bromwich Albion at Stamford Bridge at 17:00 on Saturday.