https://www.baseballthinkfactory.org/bt ... atfldg.htmThis is a great reference for fielding--add the two per-game numbers together--it gives you an idea of how many total bases that fielder will give up in card chances referenced to 216 chances per each roll.
If you buy the strategy guide from Strat--you get these numbers for offence for every player too--so you can subtract one from other to see total effect of his offence minus defense.
remember a player gets 3 AB for every 27 AB he has to defend on average--so defense adds up.
AS a quick comparision I added JD Davis card--vs RH he is 116.2 offense in your park (GAP), this is in card chances, 1 for BB-2 for SI ...... 5 for HR (on Base + Slugging or OPS in card chances)--about the same LH as he is rated E--you would subtract 46.3 (Off the chart) from this to get his rating compared to say a 2 fielder the hits less but better fielder.