Chelsea boss Jose Mourinho believes that both Tottenham and Manchester United are in danger of falling too far behind in the Premier League title race.
Mourinho's team remain firmly in the hunt after 13 games, sitting four points behind leaders Arsenal.
Tottenham and Manchester United played out a 2-2 draw at White hart Lane on Sunday which left the north London club 10 points adrift of the top in 9th while David Moyes' side are a point closer to the Gunners in 8th.
The Red Devils have struggled to find their best form under Moyes following the departure of Sir Alex Ferguson at the end of the last campaign - although they are currently on a 12-game unbeaten run.
Tottenham meanwhile have come in for heavy criticism for their style of play and lack of goals under boss Andre Villas-Boas this term, with some reports suggesting he was on the verge of being sacked after the 6-0 defeat against Manchester City.
According to Mourinho, who will lead his Chelsea side out against Sunderland tomorrow evening, both Tottenham and Manchester United will need to improve their results quickly if they are to keep pace with the front runners.
“It’s something that in two matches that could be over. But nine or 10 points is a gap.”
The 'Special One' continued: “Spurs and Manchester United know that if the next step is reduce from 10 to seven points or nine to six points, they can get in the race.
“[But] they know that if it becomes 10 to 13 points or nine to 12 points, it becomes hard.
“Arsenal are comfortable because they can slip up in one match and nothing happens to them.”
Tottenham will have the chance to pick up their first league win in five games when they take on Fulham tomorrow, while Manchester United play hosts to fellow top-four hopefuls Everton.