2. Invitro (Camluck - Keystone Trinidad)
Lifetime OSS Summary: 16 starts - 10-4-2
Lifetime OSS Earnings: $742,881
Breeder: Gord Irwin, Murray Ross, Ont.
Inducted into the Canadian Horse Racing Hall of Fame in 2011, Invitro never finished worse than third in her OSS career. The homebred owned by Gord Irwin and Murray Ross concluded her sophomore campaign with a win in the 2004 Super Final, making her the richest pacer in Ontario Sires Stakes history.