This thread gave me a chance to take a look at my horse matchup numbers. The overall numbers look like:
622-656, ROI $.087, +199.41 units
When I break down the numbers a bit, here's what I see:
1 unit plays
281-327, ROI +$.082, +49.20 units
1 1/2 unit plays
91-108, ROI +$.015, +4.84 units
2 unit plays
133-128, ROI +$.099, +54.63 units
3 unit plays
55-50, ROI +$.088, +29.30 units
4 unit plays
46-30, ROI +$.193, +59.80 units
5+ unit plays
16-13, ROI +$.032, +6.32 units
Note there was a one time adjustment figure made for a book where I couldn't get my daily plays, but instead made one entry to account for the balance lost.
The results of the 5+ unit plays doesn't bother me as the sample size is nor really relevant. What is a little disturbing is the record on the 1 1/2 unit plays. Perhaps something to think about going forward.