Hitting Science I agree with you. What you'll find in fast pitch is that a strong girl with composite bat and 200 foot fence can hit their fair share of home runs by simply squaring up the ball, regardless of swing mechanics. You can't do that in baseball, especially when you get to wood/BBCOR. While most on this site are pushing toward mechanics for the FP swing as similar as possible to high-level MLB swing, and rightfully so, fastpitch has more room for error. You simply don't see girls suddenly struggle in their high school years as you do boys that have to adjust their mechanics to bats that take the "air" out of swings that used to work when they could use aluminum/composite.