Thousands of fans are already in town and providing a boost to the local economy, but they aren't giving any kind of boost to their opposition.
"That's right, we think he was shaking," said Wisconsin Fan Frank Alioto. "Maybe it was a little bit of the heebie jeebies. Maybe a little fear."
State fans told Fox59 News they're plenty confident.
"Michigan State's won three out of the last four," one MSU fan said. "I think four out of the last five tomorrow."
Even the site of the game gives the Spartans faith.
"I was here in 2000 when Michigan State won the (men's basketball) National Championship. Unbelievable," said Michigan State fan Robert Gates. "Great karma here in Indianapolis. So, go Green."
No matter what color is represented, downtown businesses said they're happy to welcome a different kind of green.
"Plenty of beer to sell, plenty of food to sell," said Chris Burton, managing partner of Kilroy's downtown. "You can see a lot of Wisconsin and Michigan State fans coming in already, but tomorrow is going to be the big day. Probably three to four times our normal Saturday sales."
At least 67,000 fans are expected for the game, but there will be thousands more taking in the events outside on Georgia Street, and inside the Big Ten Fanfest in the convention center. In all, the impact on the local economy is expected to top $17 million.
"The guys are going to go to the game, and we're going to go shopping," said Stephany Anderson. "We're going to take in the mall and maybe go to a couple of restaurants and hang out and just party with everybody."
Some are already planning to make this party an annual tradition.
"You know, try to get the same group of guys to come down here year after year and hopefully the Badgers get a couple more showings in here," said Andy Grinwald, a Wisconsin fan who met up with a group of friends for the game. "This will be the first game towards our Visa commercial."
Some downtown bars said Saturday could wind up being their biggest day of the year.