#257: Kentucky Derby Shocker

80-1 long shot wins Kentucky Derby; 

Mattress Mack changes the odds; 

Midi baccarat; 

Abandoning a slot machine; 

New dealer exposes hole card; 

Trip reports: 

Isleta Casino; 

Reno / Lake Tahoe; 

del Lago Resort & Casino; 

Hippodrome London; 

Four Queens; 

Downtown Grand; 

Atlantis; 

Soaring Eagle Casino & Resort