Derek Hulley says he was on his way to do some Christmas shopping when he decided to check a $19 quickpick ticket at a south-side convenience store.
He says at first he thought he'd won $900,000 but he went to the counter to double-check and the clerk told him it was the big win.
He says he tried to go out and have a bite to eat but he was "too nervous and shaking too much."
Hulley says he'll use the money to buy a house, a new car and travel around the world.
He says he's always wanted to go to the South Pacific.
Hulley's win was one-third of the $29.9 million jackpot. There were also two winnings tickets in Ontario.