Champion Action This Day will return to stud at Castleton Lyons in 2010, the Lexington farm has announced. Castleton Lyons will stand the 8-year-old Kris S. stallion as its own property and will relocate him from former owner B. Wayne Hughes's Spendthrift Farm, also in Lexington. Action This Day was champion juvenile in 2003 after winning the Breeders' Cup Juvenile that year. He is the sire of stakes winner Night Action and stakes-placed Rapid Release in his first two crops to race. "The opportunity arose for Castleton Lyons to assume full ownership in Action This Day, and we were delighted to be able to complete this and look forward to him joining our roster for the 2010 season," said Castleton Lyons president Shane Ryan. Action This Day is out of the Trempolino daughter Najecam, a multiple graded-placed mare. His fee will be announced at a later date, according to Castleton Lyons.