Eden Hazard produced a breathtaking individual display for Chelsea against Sunderland on Wednesday night.
The Belgium international scored two fantastic goals and set up another, to inspire the Blues to an important 4-3 victory at the Stadium of Light.
“It was by far our best away performance of the season,” Jose Mourinho said afterwards. “We played fantastic football. We created, we were dynamic and we had a special Hazard.
“Sometimes he does incredible things then disappears from the game. A bit like a kid enjoying it. Today he was fantastic throughout."
This was Hazard's finest performance since joining Chelsea from Lille in 2012 for a £32m fee. That's not to say that the 22-year-old has been disappointing since arriving at Stamford Bridge - far from it, in fact - but there have been countless Premier League matches when we all expect a little more from this supremely gifted footballer.
Hazard, on his day, is unplayable. But unless he produces these magical performances on a consistent basis, he will never be mentioned in the same breath as the likes of Lionel Messi and Cristiano Ronaldo.
While you might think it's a little unfair to compare Hazard with the world's greatest players, that's the level the player himself aspires to reach.
"My dream is 50 or even 60 goals like Messi and Ronaldo. They have shown it is possible, so maybe I can do the same," Hazard told reporters in June.
"I had a lot of assists last season and a few goals, but the problem is that I tend to choose the beautiful option too often and dribble with the ball, when a different way might cause more damage."
Mourinho can help Hazard reach the level of Ronaldo. The Portuguese coach got the best out of the 2013 Ballon d'Or favourite during his three-year spell at the Bernabeu, and there's no reason why he can't do the same with Hazard.
OK, so he might never reach the level where he's scoring 50 goals a season, but if he can score half that amount he'll be well on his way to cementing his status as a Chelsea and Premier League legend.
It's sometimes difficult to remember that Hazard is still only 22 years old. Imagine how good he'll be in, say, another four or five years' time.
He possesses every attribute required to become one of the world's best players - all he must do is improve his concentration and have that hunger to put in 100 per cent effort every time he takes to the field.
That innate determination is what separates the good players from the great players - and Hazard must ensure that people remember him as a truly great player, because there's nothing sadder in football than unfulfilled potential.