IMHO the water truck was employed just before the main events which in the cool evening put too much water on the track. Prior to the Pro Singles Main event they let them out for a 1 lap check out and the first rider through turn one almost lost it. It was obvious what was going to happen after the start and into the first turn. On the second lap turn one saw 5 riders go down. The track was in super condition with a low line and a high line through the corners, I believe they just put way too much water after the semi's.