Although a year apart, their careers from yearling sale to stud, via stellar racetrack careers, have a number of parallels, which will make their progress interesting to follow.
Both retire this coming season at $55,000.
Both had/have very good race records - RR 7/11 including a Galaxy and an Oakleigh Plate under topweight and MN 7/10 including a Coolmore and a Diamond Jubilee.
Both are booked full, RR before he retired and MN before he won on Saturday.
RR's by Snitzel and MN is by Fastnet Rock, two of the more successful stallions to have stood in Australia in recent times.
Both have strong female pages.
RR cost $320,000 as a yearling, MN $350,000, so they were both good types, but were far from the pick of their daddies' crops.
RR stands at Newgate and MN at Coolmore - two of the savviest promoters in the business.
Which will the market prefer?
We saw at this season's yearling, weanling and broodmare sales the definitive preference for Deep Field's stock over that of his G1 winning full brother, Shooting to Win, and that was before either had had horses to the track.
Will the market be as judgmental with this pair, which share so many, at least commercial, similarities?