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Garlon · 04-02-2019, 11:28 AM

Here is some data from Sportsmans Park 1921-1925

There were 3805 runs scored in 386 games at Sportsmans Park while there were 3927 runs scored in 383 games on the road. This is the data both for the Cardinals and their opponents in those seasons. At home there was an average of 9.857 runs scored at Sportsmans Park and 10.253 on the road. Dividing the home by the road we get 9.857/10.253 = .961 So Sportsmans Park had about 3.9% fewer runs scored per game than on the road. So in OOTP we need to find a single value to apply to BA/2B/3B/HR to recreate this. This comes out to an average of .977 for those seasons. So by applying this factor in the game the idea is to recreate this scoring environment as best as possible. So notice that a 2.3% decrease in all offensive values equates in theory to a 3.9% decrease in scoring based on how runs were created from offensive values that season.

Ok, now let's look at discrete data of 2B and 3B. In Sportsmans Park from 1921-1925 there were 1712 2B and 3B over approximately 24378 balls in play (AB - K - HR) while on the road there was 1654 2B and 3B over approximately 24112 balls in play. 1712/24378 = .0702 for the home value and 1654/24112 =.0685 for the road value. Now we divide the home by the road and we get .0702/.0685 =1.0248 Ok, so we can say that Sportmans Park increased 2B and 3B by 2.48%.

So you're not wrong that Sportsmans Park was increasing 2B and 3B, but it was only by about 2%. Hornsby had about 60 2B and 3B during those seasons. A perfect home/road division comes out to about 30 at home and 30 on the road. The discrete data suggests it was more like 31 at home and 29 on the road (it's actually more like 30.48 at home and 29.52 on the road), whereas my park calculations has this the other way around.

My point here is that the affects of ballparks are generally overstated. Certainly Sportsmans Park was bigger, but the outfielders knew this and perhaps played deeper so that not as many gappers got through. The data just doesn't suggest that there was a huge advantage for 2B and 3B in that stadium.

04-02-2019, 11:28 AM	#15
Garlon Hall Of Famer Join Date: Jun 2004 Posts: 4,158	Here is some data from Sportsmans Park 1921-1925 There were 3805 runs scored in 386 games at Sportsmans Park while there were 3927 runs scored in 383 games on the road. This is the data both for the Cardinals and their opponents in those seasons. At home there was an average of 9.857 runs scored at Sportsmans Park and 10.253 on the road. Dividing the home by the road we get 9.857/10.253 = .961 So Sportsmans Park had about 3.9% fewer runs scored per game than on the road. So in OOTP we need to find a single value to apply to BA/2B/3B/HR to recreate this. This comes out to an average of .977 for those seasons. So by applying this factor in the game the idea is to recreate this scoring environment as best as possible. So notice that a 2.3% decrease in all offensive values equates in theory to a 3.9% decrease in scoring based on how runs were created from offensive values that season. Ok, now let's look at discrete data of 2B and 3B. In Sportsmans Park from 1921-1925 there were 1712 2B and 3B over approximately 24378 balls in play (AB - K - HR) while on the road there was 1654 2B and 3B over approximately 24112 balls in play. 1712/24378 = .0702 for the home value and 1654/24112 =.0685 for the road value. Now we divide the home by the road and we get .0702/.0685 =1.0248 Ok, so we can say that Sportmans Park increased 2B and 3B by 2.48%. So you're not wrong that Sportsmans Park was increasing 2B and 3B, but it was only by about 2%. Hornsby had about 60 2B and 3B during those seasons. A perfect home/road division comes out to about 30 at home and 30 on the road. The discrete data suggests it was more like 31 at home and 29 on the road (it's actually more like 30.48 at home and 29.52 on the road), whereas my park calculations has this the other way around. My point here is that the affects of ballparks are generally overstated. Certainly Sportsmans Park was bigger, but the outfielders knew this and perhaps played deeper so that not as many gappers got through. The data just doesn't suggest that there was a huge advantage for 2B and 3B in that stadium.