R. G. Tobin
Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155
Received 9 May 2007; accepted 28 August 2007
even modest changes in bat speed can increase the proportion of batted balls that result in home runs by 50–100%
I need to read this more carefully but for a batter who could hit 50 home runs, that would mean 75 to 100 home runs. Maybe we could describe that one season of 2001 for Barry Bonds as barely fitting into that: 73 HR after hitting his high of 49 in 2000.
Just because a batter has a huge increase does not mean it's because of steroids. For instance Carl Yastrzemski hit 44 HR in his triple crown season, 1967. His previous HR: 11, 19, 14, 15, 20, 16. Yaz improved more than 100%.
Of course the coaches of the 1963 San Diego Chargers of the American Football League provided steroids to the players, so who the heck really knows what was going on even back then.
Football's first steroids team: the 1963 San Diego Chargers - ESPN
Pumped-up pioneers: the '63 Chargers
Updated: February 1, 2009
But Yaz did not break the home run record so he was OK with the baseball steroid zealots.