In this May 3, 2008 file photo, track personnel try to hold down Eight Belles after the 134th Kentucky Derby at Churchill Downs in Louisville, Ky. Eight Belles was euthanized after breaking both front ankles following a second-place finish in the Kentucky Derby. Nearly a year after the first fatal injury, Churchill Downs announced Monday, March 2, 2009, that it is beefing up safety requirements ahead of this year's Kentucky Derby. The company is enacting more than 20 changes, ranging from enhanced drug testing to limits on whips and racing ages, in time for the start of the spring meet at its signature track in Louisville, Ky.