Michael O'Leary admits to Don Cossack career fears

Owner Michael O'Leary admits he fears the career of Cheltenham Gold Cup hero Don Cossack is over after the horse sustained a tendon injury.

The nine-year-old was ruled out of this week's Punchestown Festival due to his tendon issue and while trainer Gordon Elliott remains hopeful of getting his stable star back to the track, O'Leary believes Don Cossack is facing an uphill battle.