https://community.betfair.com/horse_antepost/go/thread/view/94098/30694405/two-sister-broodmares-have-potential-derby-horsesCloth of stars and Ulysses. Guess it will have happened before....https://community.betfair.com/horse_antepost/go/thread/view/94098/30694405/two-sister-broodmares-have-potential-derby-horses?post_id=548776455#548776455Cloth of stars and Ulysses. Guess it will have happened before....Sun, 22 May 2016 10:20:29 -0500