The former AEG chief now heads up MLSE in Ontario and is determined to achieve what he did in Los Angeles with the company that owned the successful LA Lakers, Kings and Galaxy.
"If you look at the run we had [with AEG], what made the Staples Center phenomenal was the content," he said after being appointed as president and CEO of MLSE.
"You had the Lakers winning six championships during that time. You go open up the Home Depot Center and the Galaxy have won four championships and you convince David Beckham to come over. And then the Kings win the Stanley Cup.
"It makes you look a lot brighter and it makes the building look a lot better when you are hanging those kinds of banners."
He added: "[Winning is] what we have to do with Maple Leaf Sports."
And Leiweke revealed that he had been speaking to former Galaxy ace Beckham regarding the insight of signing a Designated Player at Toronto.
"I've talked to Becks a lot over the last two weeks about this opportunity," Leiweke said. "He continues to be a partner on the vision of where we should be going in terms of growing the sport [in North America]. I think the fans of Toronto Football Club deserve that kind of player if we can find the right one.
"We were very lucky at the Galaxy to find David Beckham, Robbie Keane and Landon Donovan. I have been told by the board and the owners that if we find the right guy, they are all in and that they are committed to that move."