Apprentice Tom Sadler makes his return to race riding at Sandown just 12 days after suffering concussion in a fall.
Sadler was hospitalised when Lord Esprit crashed in the final event at Moonee Valley on December 18.
The apprentice had only six days earlier returned to riding after serving a four-month ban for testing positive to cocaine.
Sadler rode a winner at his first meeting back at Stawell on December 12 guiding Zolt to victory for Troy and Leon Corstens.
The 20-year-old rides Testability for his trainer-father John in the Schweppes Handicap over 1300m on Wednesday.
Testability is at $12 in an open betting race.