Open Group A
16/20 on the day
Aside from Gold Ship and some oddness when there were 2+ debuffers, the best performing uma I saw was actually Special Week, probably because Gourmand is a super consistent recovery if you don't have to get it from her support, and it makes her super easy to build. Every time she showed up, she had a good chance of winning at any given race.

Also what's with people buying Mystifying Murmur but not All Seeing Eyes on their NNs? Almost every one I saw had it.