BRADENTON, July 30 -- At some point on Tuesday evening, a customer at a Wawa convenience store on State Road 70 East took a Quick Pick lottery ticket and walked out. Whoever that person is, they are now holding a claim to $803 million.

Lottery officials confirmed Wednesday morning that the sole winning ticket in the July 28 Mega Millions drawing was sold at the Wawa at 14510 State Road 70 East in Bradenton, on Florida's Gulf Coast north of Sarasota. The winning numbers, 34, 48, 49, 59 and 70, along with Mega Ball 12, matched all six digits on one ticket across the 45 participating states, Washington D.C., and the United States Virgin Islands. As of Wednesday afternoon, no one had stepped forward to claim it.

The jackpot, confirmed by Me...