Conversation so far:
What kind of horse was Seattle Slew?
Seattle Slew was was an American Thoroughbred race horse.
Are there any other interesting aspects of the Seattle Slew article?
Seattle Slew was described as intelligent, dominant and determined by Billy Turner his trainer.
How much did Seattle Slew cost?
Seattle Slew was purchased for just $17,500 (equivalent to $81,000 in 2018) at the 1975 Fasig-Tipton yearling auction.
Was there a service or a memorial for Seattle Slew?
Seattle Slew was buried whole at Hill 'n' Dale, the highest honor for a winning race horse. Three Chimneys Farm erected a statue of Seattle Slew in his honor.

Question: What is something notable about his early career?
Self-contained rewrite: What is notable about Seattle Slew's early career?