The racing career of The Opera House, believed to be Australia's only pure white racehorse, is in doubt because of injury.The Opera House, raced by a syndicate put together by adman John Singleton, sustained a tendon injury last week.A report on trainer Kris Lees's website confirmed the popular mare had more than likely run her last race."It's extremely disappointing to lose her because I had no doubt the best had yet to be seen of her on the racetrack," Lees said.The Opera House made $270,000 w

The racing career of The Opera House, believed to be Australia's only pure white racehorse, is in doubt because of injury.

The Opera House, raced by a syndicate put together by adman John Singleton, sustained a tendon injury last week.

A report on trainer Kris Lees's website confirmed the popular mare had more than likely run her last race.

"It's extremely disappointing to lose her because I had no doubt the best had yet to be seen of her on the racetrack," Lees said.

The Opera House made $270,000 when knocked down to Singleton at the 2008 Magic Millions yearling sale.

Because of her distinct colouring, The Opera House made headlines long before before she stepped onto a racetrack for the first time.

So much so, it seemed almost inconsequential The Opera House's bloodlines made her a three-quarter sister to Might And Power, a modern day turf idol.

In nine appearances, The Opera House managed one win - at Wyong last month - in what could turn out to be her racetrack swan song.

"John (Singleton's) vet John Peatfield will scan the mare's injured leg and then a decision will be made on her future," Lees said.

"But she is rising five years of age and it's very likely she will be retired to stud and not race again."

The Opera House's owners also include Australian rugby league great Andrew Johns.