By enabling just a 4 percent increase in bat speed, steroids may turn hundreds of a season's long outs into home runs. (scientificamerican.com)
And that extra bat speed could cause a ball to jump off the bat 4 percent faster. (scientificamerican.com)
He is a little guy in comparison to other players, but his core is so strong that it allows him to generate amazing bat speed and strength. (pathtofatloss.com)