Chelsea boss Antonio Conte says his side need six victories from the last eight games to win the Premier League.
The Blues are seven points ahead of nearest rivals Tottenham after a 2-1 win over Manchester City on Wednesday.
"Tottenham could win eight games. For this reason to win the title we need 18 points," said Conte.
Meanwhile Spurs boss Mauricio Pochettino said his side are capable of winning all their remaining game and will fight to the end.
Tottenham scored three late goals to come from behind and win 3-1 at Swansea.