Kansas City, Mo. ? First the Super Bowl, now the All-Star game.

If voters approve a sales tax to fund hundreds of millions of dollars in upgrades to Arrowhead and Kauffman stadiums, Kansas City will be headed for the big time.

Royals owner David Glass announced Wednesday that commissioner Bud Selig had promised Kansas City an All-Star game between 2010 and 2014 if the renovations to Kauffman Stadium were made.

Earlier this year, NFL commissioner Paul Tagliabue announced the 2015 Super Bowl would come to Arrowhead as long as the renovations were made, including a rolling roof that would make the stadium climate-controlled.

“It’s really an All-Star week rather than just an All-Star game,” Glass said from the Royals’ spring-training complex in Surprise, Ariz. “There’s the home-run derby, the futures game with young stars. It will be an economic generator for Kansas City, as well.

“They have a commitment for a Super Bowl, we have commitment for an All-Star game. It’s a big-time opportunity for Kansas City.”

But first voters in Jackson County, Mo., must give the go-ahead on April 4 to a three-eighth-cent sales tax that would raise about $425 million.

With the teams kicking in a total of $100 million and the state of Missouri issuing $50 million in tax credits, the total would be about $575 million to upgrade and make significant additions to the Truman Sports Complex, which opened about 33 years ago.

Another ballot measure would raise about $200 million to build the rolling roof, which would be used for both stadiums. That money would be raised primarily from a business tax.

Kauffman Stadium, then named Royals Stadium, played host to the All-Star game in 1973 shortly after it opened. Glass said another one would mean between $50 million and $70 million for the area.

“It is very important economically to a city,” he said. The rolling roof “would be a help but is not a requirement” for landing the game, he added.

Without the rolling roof, the NFL has said the Super Bowl could not be scheduled for Kansas City.

Glass said he was confident voters would approve the tax.

“I think the voters from Jackson County are going to do the right thing,” he said. “I think (the All-Star game) is a plus for them, but I don’t think that it sways the vote. It’s something else we can do that is available to them. It is an economic generator for the city, no doubt about it.”