MILDURA-owned greyhound Morton is in the mix for his biggest pay day yet after selection for the richest race in Western Australia.

The flying canine has drawn box two for Thursday night's The Sandgroper race in Perth which carries a purse of $600,000, half of which goes to the winner.

The Sandgroper is the first leg of Racing WA's Western Trilogy, with the slot selection major races for greyhou...