Last Friday afternoon, the St. Louis Cardinals finalized a 5-year, $82.5 million with former Cubs center-fielder Dexter Fowler. As has been explained in the media, the Fowler addition was meant to add more athleticism both on defense and atop the Cardinals’ lineup. At face value, this seems to make sense; Fowler’s skills are indicative of a lead-off hitting center fielder. In theory, inserting Fowler in center in place of incumbent Randal Grichuk should improve the outfield defense. In researching this theory; however, I have found that the ‘Fowler Effect’, while certainly providing plus-value, is not as straightforward as it may seem.