Officials at Churchill Downs reported that all-sources wagering on Saturday's Kentucky Derby program was $288.7 million, easily surpassing the previous record of $273.8 million set just last year. All-sources wagering on the Kentucky Derby alone was $188.7 million, bettering the previous mark of $179 million, also achieved last year. All-sources handle for the entire week leading up to Saturday's Run for the Roses was $412 million, beating last year's record $391.8 million. This year's Derby featured a field of 18 and was attended by an announced crowd of 150,335. It...