1. Looks like your home park is the Astrodome? I would think that it would be a waste to draft so much range in a pitcher park, especially with the high cost these days in the sim for range.
2. Looking at your fielding ratings of your starters other than the catcher, you have two B's (3B and RF), three C's (1B, 2B, CF) and two C- (SS, LF). That's below average to start.
3. Next, consider fielding normalization. Forgetting about the catcher once again, 6 of your 7 fielders are pre-1925. To help coax better fielding out of them, part of the equation is having a modern day arm on the mound. Of your 4 starting pitchers, 3 of them are pre-1913. So you will likely make a lot of errors anyway with range not even being a consideration. If you typically face a lot of early 20th century hitters or older, that will make it even worse.
4. 13 games is an incredibly small sample size. But if we went ahead and extrapolated this out with the small sample, 150 plus plays is really good IMO.