Betting on the 2018 Kentucky Derby horserace set new records for operator Churchill Downs Inc (CDI) while seriously enriching a few fortunate race bettors.

On Saturday, the 144th Kentucky Derby set new records for wagering on both the overall Derby Day program and on the day’s marquee race itself, which saw betting favorite Justify live up to its advance billing by finishing with a comfortable margin of two-and-a-half lengths.

CDI reported that all-source wagering on the Derby Day slate hit $225.7m, up 8% over 2017’s record of $209.2m. All-source wagering on the marquee race was also up 8% to a record $149.9m. For Derby Week, total betting handle was up 9% to a record $311.2m.

The gains came despite a steady downpour of rain on Saturday, which relegated the on-track attendance to no better than eighth-best in track history. Attendance over the five-day event improved 7% to just over 375k.