The first sanctioned single-game sports bet outside Nevada was a $10 wager on the Philadlephia Phillies placed at Dover Downs on Tuesday, 5 June.
Ref: Delaware Online
A thought has occurred to poor old DonDiego. As legal sports betting commences at different venues across America, it would seem that the line on a game . . . say, Philadelphia Eagles at Chicago Bears, . . . might be significantly different at a casino in Illinois versus a casino in Pennsylvania, as Chicagoans favor Da Bears and Philadelphians favor the Birds.
This would enable someone able to track such line variances to improve his chances by selecting the book in the locale offering the better odds.
Betting syndicates may well prosper.
Hmm, . . . being a runner might be a way for poor old DonDiego to augment his retirement income.