'Put him in the Liverpool and Manchester City team at this moment in time and I think he might be able to.
Hazard's hat-trick boosted his tally to five goals in as many Premier League appearances and kept him on track to beat the 23 he netted in all competitions in his final season at Lille.
Hazard, who has scored or assisted in each of Chelsea's four games this season, took over the game shortly before halftime.
Hazard has started this campaign in sensational form; scoring five goals and providing two assists in just three starts for Chelsea so far in the Premier League.
And the 27-year-old was quick to pay tribute to Frenchman Giroud for serving up his first two goals on a plate on Saturday.
Asked if Hazard can win the Golden Boot, Sarri replied: "I think so".
Bluebirds boss Neil Warnock thinks Chelsea could struggle to contain the Premier League's very best teams unless they hone their defending - and Sarri agrees. "I'm always trying to do more - create more chances, score more goals, and today a hat-trick so I will try to do this more". That's what is important.
Hazard praised Chelsea for refusing to panic however, with the Blues hitting back quickly to carry a 2-1 lead into half-time.
Despite his pace, flair and artistry on the ball, the Belgium worldwide just doesn't score enough.
Sarri too, recently talked up the possibility of the Brazilian global staying beyond the current season at Chelsea, saying, "David has a big future here - he will be very useful for us".
"Some of the one touch football we were playing was a delight to watch and we could have had two or three before we finally got the breakthrough". Jorginho might be a brilliant passer of the ball but he is not quite Kante when it comes to the defensive aspect of things. We need to keep this momentum.
It should be no surprise, though, as Giroud's all round influence on games was visible at the World Cup.
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