Thing about it, if you knew what pitch was coming would the hitting mechanics change? The pitchers job is to disrupt hitters timing. If the hitter strides like a fastball is coming and fires his hands like a fastball is coming and the pitch arrives later than expected then mission accomplished for the pitcher. A hitter can't do much with the ball when he's expended all his potential energy. However, when the stride is expended but the hands remain back, the hitter has some options as some energy remains stored. IMO it's all about recognition and learned discipline for the hitter. Beyond all the above there are a number of philosophies regarding hitting the breaking ball. One of the best exhibitions recently was Florida vs Chicago in the NLCS two years ago. The Marlins took to the philosophy of hitting every good breaking pitch to the opposite field eschewing a potential long ball for the higher percentage of just poking it into right. A hitter has to know what's coming or guess right to really turn on a ball, but if your hands remain ready to launch, anyone can poke it into the opposite field...IMO it did the Cubbies in...not Bartman.