I was performing some exacta analysis, experimenting with isolated Q rankings and came across a puzzling result. I setup a simple UDM called "exacta bottom" incorporating Q2-Q6 rank as an exacta bottom with some interesting results. Went a step further and created individual UDM's to further analyze 2nd place finishers by Qrank Q1/Q2/Q3/Q4 etc...to Q10 and found that some of the horses were not being flagged either on HTML or Text reports.....There doesn't seem to be a pattern either...CTX 05/25/09 R1 missing Q6/9/10 ....R2 Q9...R4 Q4 any ideas??? I use TSN files and calcs were made after "manual" scratches were entered. Thanks!! Scott