LANSING, Mich. - One lucky Powerball player may not be so lucky after Thursday. However, they have yet to claim their $1 million prize, which expires Oct. 3 at 4:45 p.m. one year from the drawing date. This would be the third unclaimed $1 million prize in 2019. The winner should contact the Michigan Lottery Public Relations Division at 517-373-1237 to schedule an appointment to receive their reward. The prize must be claimed at Michigan Lottery's headquarters in Lansing.