OOTP Developments Forums - Updated Position Ratings Formulas

Back in August I tried to update biggerme's old OOTP 13 fielding position ratings formulas for OOTP 17. Below are the results for OOTP 18 and the differences from last year.

Calculations per Position
Legend: Green is Constant Value, Red is Relative Weight of Defensive Rating and Blue stands for Handicap for that position.

P = ( ( (Infield Range - 125)/25*39.5) + ( (Infield Arm - 125)/25*6.5 ) + ( (Turn DP - 125)/25*3.25 ) + ( (Infield Error - 125)/25*15.75) + 308 )
C = ( ( (Catcher Ability - 125)/25*19.5) + ( (Catcher Arm - 125)/25*19.5 ) + 133 )
2B = ( ( (Infield Range - 125)/25*21.5) + ( (Infield Arm - 125)/25*1.5 ) + ( (Turn DP - 125)/25*9 ) + ( (Infield Error - 125)/25*8.25 ) + 129 )
3B = ( ( (Infield Range - 125)/25*13) + ( (Infield Arm - 125)/25*17 ) + ( (Turn DP - 125)/25*3.25 ) + ( (Infield Error - 125)/25*7.5 ) + 113.5 )
SS = ( ( (Infield Range - 125)/25*25.5) + ( (Infield Arm - 125)/25*2 ) + ( (Turn DP - 125)/25*8 ) + ( (Infield Error - 125)/25*7.5 ) + 93.75 )
LF = ( ( (Outfield Range - 125)/25*29.5) + ( (Outfield Arm - 125)/25*5.75 ) + ( (Outfield Error - 125)/25*4 ) + 149 )
CF = ( ( (Outfield Range - 125)/25*43) + ( (Outfield Arm - 125)/25*1.75 ) + ( (Outfield Error - 125)/25*3.5 ) + 78 )
RF = ( ( (Outfield Range - 125)/25*25.5) + ( (Outfield Arm - 125)/25*11 ) + ( (Outfield Error - 125)/25*4 ) + 129 )

Compared to the previous ratings, here are the changes in how OOTP calculates position ratings:

P - Same as OOTP 13 (didn't run last year)
C - Same as OOTP 17 (figured out the regression issue from last year, this is correct)
2B - Same as OOTP 13 and 17
3B - Very similar but there's a bigger handicap and slightly lower credit for each skill, resulting in lower position ratings at 3B. Changes are so minor it may only be the handicap that changed, I didn't use a huge player population.
SS - Same as OOTP 17
LF - Handicap changed, Range slightly less important, Arm slightly more important, Error slightly less important
CF - Same as OOTP 13 and 17
RF - Handicap changed, Range slightly more important, Arm less important, Error very slightly less important

Essentially what I think the result of all this is will be that third basemen and corner outfielders will have lower defensive position ratings in most cases, or at least the good fielders won't have as high of ratings.

First base also appears the same as last year:

Quote:

First base was a way more complicated beast but I have it nailed down pretty well. My final formula consistently overestimates the final rating by 0-3 points, though, so it's only close. The height adjustment is dead on, though.

1B = Skill Rating * Height Adjustment

The skill rating is the sum of the factors as shown below:

Skill Rating = Infield Range Factor + Infield Error Factor + Infield Arm Factor + Turn Double Play Factor

The IA and TDP Factors are simply those ratings divided by 70. The Infield Range and Infield Error factors have a break point at 90, though.

For IR up to 90, the IR factor is IR/3. For IR>90, the IR factor is 30 + (IR-90)*2/25

For IE up to 90, the IE factor is IE/5. For IE>90, the IE factor is 18 + (IE-90)/25

After adding those 4 factors up you now multiply by the height adjustment.

Height Adjustment = 1 + (Height-155)/15

where the height is in centimeters. So if you have a fielder who is 100 across the board in all fielding skills on the 200 scale, if he is 168 centimeters tall (about 5'6") he will have a first base rating of about 97. If he is 193 centimeters tall (about 6'6") it will be about 184.