Originally Posted by
slacker00
What you are talking about isn't arbitrage. Arbitrage is when you see something like -110 on one side and +111 on the exact opposite side at the same time, so you can bet both sides and make a guaranteed risk-free profit. I haven't seen a true arbitrage in years, but when online sports betting was first getting started, I'd see them all the time. The best one I ever did was an NFL game getting +7 1/2 +112 on one side and -7 -110 on another side, I know it's hard to believe but it really happened, not only that but it landed on the 7 and I nearly doubled my bankroll at the time. Now days, true arbitrage opportunities don't exist, unless I'm missing something.
What you are talking about is liquidating a bet, at best maybe shooting at a middle. Not great strategy unless something about the game has made you think the original bet is bad and now you like the other side. Basically, liquidating a bet is giving away value because you are betting against yourself and paying juice both ways to do it.