ภาพบรรยากาศการแข่งม้า Kentucky Derby 2014

Tim McGraw takes a picture of Ashley Cebak and Relan Sewer before the 2014 Kentucky Derby at Churchill Downs in Louisville, Kentucky, May 3, 2014. (Jamie Rhodes-USA TODAY Sports)

A woman looks out over a balcony before the 140th running of the Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 3, 2014.

Fans make wagers before the 140th running of the Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 3, 2014.

Workers stand in the winners circle following a race before the 140th running of the Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 3, 2014.

A man looks over a racing program before the 140th running of the Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 3, 2014.

A race horse is led out to the track for a race before the 140th running of the Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 3, 2014.

Spectators wear colorful pants before the 140th running of the Kentucky Derby horse race at Churchill Downs in Louisville, Kentucky, May 3, 2014.

Tracy Abney wears a derby hat before the 2014 Kentucky Derby at Churchill Downs in Louisville, Kentucky, May 3, 2014. (Mark Zerof-USA TODAY Sports)

A horse goes for a morning workout at Churchill Downs in Louisville, Kentucky, May 3, 2014.