To win big, it turns out all a Maryland man had to do was look at his strategy — and abandon it entirely. The Baltimore man usually buys lottery tickets at a gas station near his home, Maryland Lottery officials said in a Sept. 16 news release.

Powerball's latest jackpot run into 10-figure territory is not happening in a vacuum. It is unfolding in a lottery landscape reshaped by Mega Millions, shifting player habits and rule tweaks that quietly steer billions of dollars in ticket sales.

With a $1 billion Powerball jackpot prize on the line, having a plan in place is not only smart, but very necessary. Here's what to do if you win.