The Canadian-born trainer celebrated his first Oaklawn trainers title in 2020 with 52 wins and more than $2 million in earnings. At year’s end, his stable was ranked fourth by wins and twelfth in earnings nationally.
His 2020 Oaklawn stakes winners included Pioneer Spirit in the Second Division of the Fifth Season, Special Relativity in the American Beauty and Sky Promise in the inaugural running of the 1 ½ mile Temperence Hill.
After a third in the Breeders’ Cup Juvenile (G3) at Keeneland, standout two-year-old Keepmeinmind would break his maiden in the Kentucky Jockey Club Stakes (G2) at Churchill Downs and is currently among the top 3-year-olds stable at Oaklawn in 2021.
The trainer has made a huge splash since his first season at Oaklawn in 2015. Diodoro was Oaklawn’s second-leading trainer in 2017 (31 victories), capped by Inside Straight’s upset in the $750,000 Oaklawn Handicap (G2), in 2018 (32) and again in 2019 (48).
Diodoro won 29 races at the 2019 Oaklawn meeting for M and M Racing, helping Mike and Mickala Sisk set a single-season meet record for victories by an owner (61). Diodoro won 18 races at the 2018 Oaklawn meeting for M and M Racing, helping it capture its first career owner’s title.
Diodoro was Oaklawn’s co-fifth-leading trainer in 2016 with 22 victories, including four consecutive with Subtle Indian, who won the $100,000 Hot Springs Stakes and $400,000 Count Fleet Sprint Handicap (G3).
Diodoro recorded his first career Oaklawn stakes victory in 2015 when Subtle Indian won the $100,000 Gazebo for 3-year-old sprinters.
In addition to Oaklawn, also races extensively in Kentucky, Louisiana, and New York.
Diodoro, who comes from a racing family, began training in 1995. His grandfather trained and Diodoro took over the one-horse operation in the mid-1990s.