Everton manager Roberto Martinez believes that Chelsea's struggles this season show that the Premier League is more competitive than ever.
After strolling to the league title last season, with only three defeats throughout, the Blues have already been beaten nine times this campaign, most recently by a Leicester City side who only narrowly avoided relegation last term, but are currently top of the Premier League.
"I just think it is the nature of the game and how difficult it is," the Spanish boss said. "Straight away you can see that [in] the Premier League there is not a given result that you can relax about.
"Even when you are the best in the business, because Jose Mourinho's record speaks for itself, football can be very, very difficult when you've got a momentum that goes against your team and the results are very difficult to pick up.
"You have to be good in every single performance to try to get a win. It is no surprise that we are emerged in such a competitive league that anyone can suffer a bad period.
"I think the new investment and the new television deal will allow any team to have their own ways and their own reasons to be competitive.
"And we saw the signs already in this campaign that anybody can beat anybody on the day. The margins of winning or drawing or losing are becoming smaller and smaller and smaller."