The infield shift is a defensive strategy used in baseball to decrease opponents’ batting success by moving fielders to positions where the batter is most likely to hit the ball. This strategy has existed since the 1920s, but has increased in use in the last decade, aided by the new Statcast technology installed in the Major League Baseball stadiums in 2015. Although the simplest way for the batter to counteract the shift is to hit to where there are fewer fielders, the majority of batters attempt to hit over the fielders. This suggests that even if the shift successfully decreases batting average, it may consequently increase slugging percentage, as more players are changing their behavior to hit to the outfield. No peer-reviewed journal articles were found investigating the effect of the shift on batting performance, indicating a need for research in this area. Ordinary least squares regression was used to determine the effect of the shift on batting average in one model and the effect on slugging percentage in another. The results demonstrated that a one standard deviation increase in the percent of plate appearances facing a shift leads to a decrease of approximately 0.009 or 25% of a standard deviation in batting average, but an increase of approximately 0.008 or 10% of a standard deviation in slugging percentage. Therefore, the effect of the infield shift on batting average is greater than the effect on slugging percentage, suggesting that teams should continue to use the shift to decrease their opponents’ success.