Related Clues:

• Multigenerational Indy surname
• Best horse of the 20th century, per The Associated Press
• Thoroughbred grandfather of Seabiscuit
• Rival of 28-Across
• Famed racehorse
• Strangely warm on a ship
• Indy legend A.J
• Indy winner A.J
• "Floating terror" of the sea
• Whom The New York Times co-named athlete of the year, with Babe Ruth, in 1920
• Indy 500 winner A.J