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The NHL's Calgary Flames and CFL's Calgary Stampeders won't play at home until at least July, even if the two leagues resume operations by then.
The City of Calgary implemented a public-event ban - including professional sports games - until June 30 due to the coronavirus pandemic.
"Even if before the end of June we are in a situation where we think we've seen the other side of the mountain, even if we're at a place where the number of cases are coming down, I'm no epidemiologist, but I don't think it's wise to say, 'Hey, everybody, let's have (17,000), (20,000), or (35,000) people all in one space,'" Calgary Mayor Naheed Nenshi told The Canadian Press.
He added: "That's probably just not wise from a public health perspective."
The City of Toronto also has a public-event ban until June 30, but it doesn't prohibit pro sporting events.
Alberta has 1,075 confirmed coronavirus cases and 18 related deaths as of Friday.