Horse racing Never look back.
It is claimed that outsider win more often in Saturday than Wednesday or Sunday. The philosophy behinds is that trainer often let their weaker horse enroll on Saturday because their are less owner free themselves for Saturday to join the event. If these are true, we can adjust our betting strategy and don't be afraid to bet on outsider on Saturday.
After the horses win a race, can they win again in their next race? We would expect they have consistent performance but there are many factors affecting the outcome. There are some mysterious saying existing without much data support, e.g. the horse of some trainer cannot perform consistently.