Kristi Nunnink announced today, April 18, that she's retiring four-star mare R-Star from eventing because of issues with the horse's heart. The mare was entered to compete in the Rolex Kentucky CCI**** next week.
“We noticed it [at Rolex last year] in the holding box afterwards when she first came off the course,” Nunnink explained. “She would throw some irregular heartbeats. We took her to U.C. Davis [Calif.] and did a lot of research. She basically only threw them when she was in light work, and when she galloped, her heart would beat really well.”