Just a simple question...does anyone believe steroid/PED use in baseball started more or less overnight? Or did it build over a series of years?
IMO, the latter scenario makes a lot more sense. If baseball players before the early 1990s believed steroids wouldn't help (and may even contribute to bulk that would limit their flexibility and hurt their game--I have heard this argument often), then it's doubtful there would be a league-wide adoption in the course of a season or two. Rather, it would take several years of proven success to convince players to try steroids, and the usage would increase gradually.
But that isn't what the league-wide statistical record says. Here are two stats from 1980-1992: runs scored per game, and HR per game:
R/G: 4.29-4.00-4.30-4.31-4.26-4.33-4.41-4.72-4.14-4.13-4.26-4.31-4.12 (average 4.28)
HR/G: 0.73-0.64-0.80-0.78-0.77-0.86-0.91-1.06-0.76-0.73-0.80-0.72 (average 0.74)
Now, the same numbers for 1993-2007:
R/G: 4.60-4.92-4.85-5.04-4.77-4.79-5.08-5.14-4.78-4.62-4.73-4.81-4.59-4.86-4.80 (average 4.83)
HR/G: 0.89-1.03-1.01-1.09-1.02-1.04-1.14-1.17-1.12-1.04-1.07-1.12-1.03-1.11-1.02 (average 1.06)
Outside of 1987 (which was an outlier), there is a clear change in 1993. Before 1993, R/G was typically in the low 4s, and HR/9 was well below 1.0. 1993 was a transition year. Then in 1994-2007, R/G was in the high 4s/low 5s, while HR/9 was slightly above 1.0. There is no clear pattern of steady increase at any point...just typical year-to-year variance with a sustained increase in 1993-1994.
So are we going to say that steroids went from barely used to abused league-wide in the span of a year? Or are we going to admit that the increase in runs scored is more complex than just saying steroids did it?
The two biggest reasons for increase, maybe more important than PEDs? Both reasons fit the timeline and would cause quick increases in offense.
- 1993 and 1998 expansions obviously had an impact (both because it diluted talent and because it introduced the biggest outlying scoring environment in MLB history).
- Studies show that balls manufactured after 1993 are manufactured differently (balls from 1998 have a larger core and synthetic rubber ring:
http://sports.espn.go.com/mlb/news/story?id=2719191) and are more lively (balls from 1995 and 2000 bounce higher than those from 1963, 1970, and 1989:
The rankings evaluated 1,500 colleges and universities using more than a dozen measures of academic quality, the media company said.
this study also has evidence of differences in ball structure) than those from previous years. More information here:
BLIBB "I know it was a little unorthodox, but I just felt it was the best chance for us to win a baseball game." — Buck Showalter, Diamondbacks manager "I wanted to get [Barry Bond...
and here:
Scientific laboratory proof that the physical baseball itself has been
.
It really is amazing how quickly the ball juicing thing was dropped when PEDs became the hot button in the mid '00s, because it's very likely the balls were juiced. I'd like to see some follow-ups on balls from the last 5 years to see if they changed again sometime around 2007-2008.