Premier League Review: Chelsea so strong right now but do they have a wobble in them?

John Terry managed 48 games last season - can he do it again this year?

Six Premier League games have yielded five wins and unbeaten Chelsea are already odds-on to win another title but it's early days, says Ralph Ellis, and injuries to any of Jose Mourinho's favourites could upset the champions-elect...

Jose Mourinho claimed Chelsea were just a "little horse" in last year's title race. Right now they look like a combination of Red Rum, Frankel, Kauto Star and Hurricane Fly.

The statistics of the first six games of the new Premier League season are pretty frightening. Unbeaten with five wins, 19 goals scored, a five point lead over champions Manchester City, and a goal difference that's already nearly double that of anybody else.

New striker Diego Costa has hit the ground running with eight goals already to be 2.1411/10 favourite to land the Golden Boot. Goalkeeper Thibaut Courtois looks an absolute giant with bucket hands, while Cesc Fabregas has slotted seamlessly into midfield to supply the killer passes. Mourinho looks not so much the Special One as the Unbelievably Amazing One.

But before you start sticking your money on the Blues to take the title at the current price of 1.684/6, a word of caution. Since the turn of the century only two teams have been top at the end of September and gone on to be crowned as champions.

One of them was Arsenal's 2004 Invincibles, who led from day one. And the other, it has to be said, was Mourinho's side of 2006 who took until August 24 to reach the top of the pile and were then ahead of the pack for the rest of the way. So the Chelsea manager does know what it takes to ride the favourite from the front.

But the modern Premier League is far too volatile a place to imagine that any side, however good, can have it all their own way and that's why there must be mileage in laying Chelsea now at their massive odds-on price and waiting for a blip to back them again.

They were impressive against Aston Villa on Saturday, but then Paul Lambert's side without Ron Vlaar are a bit of a pushover, to be honest. And if you look at the story so far, Chelsea have faced only one of the other likely top four teams when they drew away to ten-man Manchester City.

There will be issues to confront along the way. If Costa gets injured, how good is the back up strike force when Didier Drogba looks to be a year or two beyond his best if he has to face a top side, and Loic Remy can be inconsistent?  Will John Terry, fantastic warrior though he is, be capable of playing 48 games like he did last season with his 34th birthday looming in December?

Mourinho doesn't do squad rotation. He's used just 18 players so far, and picked the identical back four in every game bar leaving Cesar Azpilicueta out for one Champions League tie. That's fine in the early days of the campaign, but it could be storing trouble - especially when some of his best players are bound to have a bit of a World Cup hangover.

I'm not saying Chelsea won't win the League. They have every chance and are deserved favoutites. It's just that recent history says it won't be so simple and that means a big chance to oppose them now and wait to make use of the joys of the Cash Out button.

Mourinho might have swapped his little horse for a big one - but there are a whole load of hurdles yet to jump before the winning post is even remotely into sight.