Boban and Silverball each incurred lifetime bans from racing in Australia on Saturday after they both bled for the second time.

Boban contested the Group 1 Futurity Stakes (1400m) at Caulfield on Saturday where he finished tenth, beaten 5.5 lengths while Silverball failed to beat a runner home contesting the Group 3 Liverpool City Cup (1300m) at Randwick.

It was the second time each of the Chris Waller pair had bled and have incurred lifetime bans from racing in Australia.

Boban retires from racing as a five time Group 1 winner with a top level resume which consists of victories in the 2013 Epsom Handicap (1600m), 2013 Emirates Stakes, 2014 Chipping Norton Stakes, 2015 Doomben 10,000 and the 2015 Memsie Stakes.

The son of Bernardini recorded 11 wins and three minor placings from his 37 starts with prizemoney earnings closing in on $3million.

Arriving at the Chris Waller stable having bled once previously during his time in Hong Kong, Silverball had quickly gone about amassing a strong Australian record.

Silverball had posted four wins from nine starts whilst in Australia with his best the 2015 Group 3 Kingston Town Stakes (2000m).

The Kahyasi gelding held feature nominations this autumn for both the Doncaster Mile (1600m) and Queen Elizabeth Stakes (2000m).