For 150 years, the third Saturday in May means only one thing in the horse racing world: The Preakness Stakes.

While Saturday’s Preakness was one to remember, officials who pushed for the planned rebuild of Pimlico Race Course may want to forget the flagging attendance record in recent years.

A wet week is expected to continue into Black-Eyed Susan Day and Preakness Day, but conditions might clear up by Saturday’s ...