Every bet you place, graded two ways: whether it won, and whether you got a better number than the closing line. Beating the close consistently is the clearest early sign of a real edge.
Closing line value: for spreads and totals, the points you gained on the closing number; for moneylines, the change in implied win chance. Positive means you bet a better number than the market settled on. For spreads, totals and moneylines the closing number fills in on its own after kickoff (the middle line across books at the last odds pull before the game); a number you type in always wins.
Your bets are saved in this browser only. Nothing is sent anywhere, so export a copy now and then to keep it safe or move it to another device.
Pick any finished game since 2024 and see what a bet would have paid. The line and price start at the close; change them to the number you would have gotten.
Bet one rule on every game it fits, the same stake each time, and see how it would have done in each season.
Practice bets and saved retro bets. They stay out of your real ledger and the scoreboard above. Spreads, totals and moneylines grade themselves once the final score is in the data.