Cheltenham Gold Cup runner-up On His Own has been retired due to injury. Willie Mullins' 13-year-old made his hunter chase debut at Thurles last week in the colours of the Prince & Paupers Syndicate, a group of owners made up of the trainer's son, Patrick, and several of his friends. The former Graham Wylie-owned veteranwas far from disgraced in finishing second to Foxrock, but that proved to be the final start of his career. Mullins jnr said: "On His Own has had to be retired, I'm afraid. "He ran well in Thurles, but returned with an injury and we've had to call it a day. "It's a shame as we were looking forward to having a bit of sport with him in hunter chases. "He did win a point-to-point for us a couple of weeks ago. "We'll have to try and find another one now." On His Own was beaten just a short head by Lord Windermere in a dramatic renewal of the Cheltenham Gold Cup in 2014. The stewards held a lengthy inquiry into possible interference between the first two, but deemed the placings should remain unaltered.