It is something I do maybe 5x a year. I take a team that I feel has the best opportunity to win a 3 or 4 game series (usually during inter-league). I decide on a start amount usually for me $500. I bet the team 1st game and then let it ride if they win for game 2 and then if it a 3 game series I will lock in a profit and not bet it all in game 3. Same applies to a 4 game set. Once I have won 2 in a row I am not greedy to let it all ride I scale back.