From DRF.....
Rest in peace.
Claimer breaks down, euthanized
Characteristic, a 6-year-old horse trained by Sadler, was euthanized on Thursday after suffering sesamoid injuries during the running of the fifth race for $32,000 claimers.
Characteristic is the second horse to be euthanized since Santa Anita's main track underwent a five-day renovation earlier this month to add polymers and fibers from the Australian synthetic surface Pro-Ride to the existing Cushion Track brand surface. The track lost 11 days of racing in January and early February after the synthetic track failed to drain following major rainstorms.
http://www.drf.com/news/article/92491.html