But Warnock is focused on the visit of Manchester City to Cardiff, who have yet to win a game and have scored only three goals.
"He can spend less energy than now at 50-60 metres to the opposite goal". But what should be more worrying for Chelsea's opponents is the smile on Hazard's face whilst he's featured for the team this season.
Hazard's most prolific Premier League campaign to date is 2016-17.
Last season Egypt global Mohamed Salah and Englishman Harry Kane were the two players that scored more than 40 goals in England.
But the Blues had to come back from a goal down to win this match as they maintain their flawless start of the season winning their first five games.
"That's a positive thing to take from the last few games".
Such numbers should be cause for excitement among Chelsea supporters, but there's also reason for caution.
USA surpasses Saudi Arabia as world's top crude oil producer
Oil prices broke the $80 a barrel barrier yesterday as the storm, along with Donald Trump's sanctions on Iran , bumped prices.
Liverpool exploits Tottenham's World Cup fatigue for 5th win
Erik Lamela pulled a goal back for Spurs but the Reds were not to be denied a fifth consecutive Premier League victory. Virgil van Dijk strolled through the game, seemingly winning every aerial duel.
The Apple Watch Is Getting Closer To Becoming A Medical Device
It could turn smartwatches "from something people buy for prestige into something they buy for more practical reasons", he said. The watch will also monitor for irregular heartbeats and can detect when the wearer has fallen, the company said.
The Blues boss has also challenged his talisman to score 40 goals this season, having already bagged five goals and two assists in five appearances so far.
Chelsea fans will be hoping Hazard can keep the goalscoring going, with Sarri releasing him from most defensive responsibilities.
Chelsea FC are looking to be one of the main contenders for the Premier League title this season after they finished in fifth place in the table and won the FA Cup under Antonio Conte last term.
However, the 33-year-old is confident that the Welsh outfit can win more games provided they sustain their attacking style of play.
"We can improve.We are not so solid as I want in the defensive phase", Sarri said, citing Cardiff's early goal from an unmarked Sol Bamba. We spoke yesterday and I told him he can score 40 goals.
There is plenty of reason to think that Hazard is primed for the most prolific season of his Chelsea career.
"So, we have a lot of good players, and at the moment we are in confidence, so we shoot, we score".