Their success is not without controversy, however, following their tie-up with Portuguese super-agent Jorge Mendes.
So how do both sides line up ahead of the Championship fixture? Victory would see Wolves open up a 12-point gap, with Cardiff having a significantly inferior goal difference and only four matches remaining.
"Congratulations to the best team, but hope the league can be fair and equal to all 24 teams", protested Leeds owner Andrea Radrizzani after his side were beaten 3-0 by Wolves last month.
Mendes is the founder of the Gestifute agency which represents a host of worldwide stars, including Cristiano Ronaldo.
The way Wolves have achieved promotion has drawn criticism, however.
However, Neal Maupay's 93rd minute equaliser means Wolves will definitely be playing in the Premier Leaguenext season after securing an automatic.
Wolves need a maximum of four points to go up as champions, and it looks inevitable as they now have a 1-0 half time lead over Birmingham in the Championship's early kickoff.
For a while on Saturday it looked as if Wolves would have to wait until Sunday, when they play Birmingham City, to go up when Fulham took a 70th-minute lead against Brentford through Aleksander Mitrovic.
Millwall extended their 17-game unbeaten league run with a 1-1 draw at Sheffield United to remain in the final playoff place.
That win moved second bottom Burton to within five points off safety.
In the years since their last Premier League adventure, Wolves dropped down as far as League One.