There were 74 Group I races run during the 2018/2019 season producing 58
individual Group I winners including the following multiple Group I winners –
Winx (7), The Autumn Sun (4), Sunlight (3), Avilius (GB) (2), Kenedna (2),
Santa Ana Lane (2), The Bostonian (NZ) (2) and Verry Elleegant (NZ) (2).The most successful stallion was I Am Invincible with four individual Group I winners (Oohood, Invincibella, Voodoo Lad, Viddora) with other sires to produce multiple winners being Lonhro (Aristia, Lyre), Not a Single Doubt (Kenedna, Qafila), O'Reilly (NZ) (Brutal (NZ), Grunt (NZ)), Pierro (Pierata, Arcadia Queen), Redoute's Choice (The Autumn Sun , Galaxy Star), Street Cry (IRE) (Winx, Trekking), Teofilo (IRE) (Cross Counter (IRE), Humidor (NZ)) and Written Tycoon (Booker, Despatch).
The most successful Group I broodmare sires were Arrowfield Stud's former legendary sires Redoute's Choice and Flying Spur, who each sired the dams of four Group I winners.
Redoute's Choice mares produced Extra Brut(by Domesday), Arcadia Queen (by Pierro), Trekking (by Street Cry (IRE), Amphitrite (by Sebring).
Flying Spur mares produced Pierata (by Pierro), Shillelagh (by Savabeel), Booker (by Written Tycoon), Nakeeta Jane (by So You Think).
Other broodmare sires to achieve multiple Group I winners were:
Galileo – The Autumn Sun (by Redoute's Choice), Invincibella (by I Am Invincible, Winning Ways (by Declaration of War (USA)
Anabaa (USA) - (Hartnell (GB) by Authorized), Microphone (by Exceeed and Excel)
Colombia - Mystic Journey (by Needs Further), Viddora (by I am Invincible),
Dehere (USA) – Castelvecchio (by Dundeel), Maid of Heaven (by Smart Missile)
Kingmambo – Best Solution (IRE) (by Kodiac), Cross Counter (GB) (by Teofilo)
Sunday Silence – Oohood (by I Am Invincible), Avilius (GB) (by Pivotal)
Zabeel – Princess Jenni (NZ) (by High Chaparral (IRE), Humidor (NZ) (by Teofilo)
