nj
i would not waste a minute on this one. what good is it to find out if the tendency over the last year, 2, 5, 10 is for the loser to rise up to the ocassion and win 55% of the time. how would that affect the next double header or even the next 50 double headers?
different sets of circumstances, different pitchers, gosh there are so many variables. it still comes down to handicapping each game. both teams are going to be tired, etc., but if randy or pedro pitch the second game, wouldn't that kind of tilt the percentages? what about the odds? what if you find out that home team wins 60% of the second game when they lose the 1st one, and 59% when they win the first one, if the average line was -150 for the home team? if you took it one step further and analyzed the odds for all the games, the actual results, etc., still, what does that tell you about tomorrow?
now, if you talk strictly odds, take into account that dheaders are usually on sundays, that we have that summer heat affecting pitchers from mid-july on, maybe there is something there, strictly from the odds perspective. you can extract the say, -160 and up, but do it for all sunday games, not only the second one. do a comparison for the whole season, then see if the favorite pitcher becomes more vulnerable and has a propensity to lose or no decision, and how did the favorite team end up, not the pitcher? then, after doing all this, remember that vegas also adjust odds to reflect this type of circumstance, if they can, meaning if the bettors don't push it one way or the other. that is were we should be coming in, looking for that discrepancy.
i really don't know if all this is worth it, i think i will stick to handicapping each game on its own merits and looking for special recent trends etc., mostly using the money line as my starting point in game selection.
pep