France international Payet was Slaven Bilic and Sullivan senior's number one target this summer and they landed their man for what now looks a bargain £10 million from Marseille.
The midfield maestro came to East London with a big reputation.
Payet excelled in Ligue 1 last season, topping the assists charts with 17 in 36 appearances while also chipping in with seven goals in a Marseille side that finished fourth.
He created more chances than any other player in world football and had the second highest number of assists which led to goals behind Barcelona's Lionel Messi.
So far the 15-cap star has debunked the myth that foreign players need time to settle and hasn't looked back since scoring twice on his debut in a friendly at Southend in pre-season.
The skillful attacker has been likened to West Ham greats Sir Trevor Brooking, Paolo Di Canio and Carlos Tevez.
And now Sullivan junior has paid him the ultimate compliment, referring to him as a 'baller' a phrase reserved for the very elite ball playing athletes around the world.
In a post on Twitter, young Jack pointed out the 28-year-old's immense stats already, saying: "Payet! Eight games, four goals, three assists, 33 chances created #baller."
Payet! 8 games 4 goals 3 assists 33 chances created #baller— Jack Sullivan (@jsullivanwhu) October 5, 2015
The mercurial talent Hammers fans have craved
It is some start to life in the East End for the Frenchman and he has Hammers fans looking forward to going to matches again.
But Payet has proved already he is not just a showpony who performs at home.
Not only does he make the Hammers tick as an attacking force, he also gets stuck in too and is not afraid of a bit of hard work to help his teammates.
His skill is also not just for show. The star will use his trickery in the right places and at the right time to influence the game or create a chance, something Hammers fans were wondering if they'd ever see again after growing fed up or a more pragmatic style under Sam Allardyce.
The only problem West Ham may face is that if Payet continues like this, can they keep hold of him?