From the USBCHA website:
New Rules for Cattle Finals:
1. Extend both Open and Nursery qualifying to the last day of March, 2010
2. Allow handlers to enter third dogs on a provisional basis, the provision being that the trial does not fill, then third dogs are allowed. the third dogs would be allowed in order of qualifying points earned for open, and all allowed in the nursery.
3. Allow late entry's for the open and nursery. Late entry's would not get into the trial ahead of any on time entry, regardless of points earned.