Plot hole: Immediately after Seabiscuit injures his leg, the track vet tells owner Charles Howard that the horse will never race again. He offers to euthanize Seabiscuit, even though it was not a life-threatening injury. Even if Seabiscuit was unable to race again, a champion racehorse has more value as a stud horse. It is nearly inconceivable that a random vet would suggest this so early on. If anything, it would be "wait and see."
Seabiscuit (2003)
1 plot hole
Directed by: Gary Ross
Starring: Jeff Bridges, Elizabeth Banks, Chris Cooper, Tobey Maguire, David McCullough, Paul Vincent O'Connor
Factual error: Many of the main characters are using modern-day binoculars (black, plastic) throughout the entire movie.
Tick Tock McGlaughlin: No more match races for this little horse because frankly they're all out of matches. Who's he gonna race, Lazarus? I pity these horses.
Trivia: The saddle worn by Seabiscuit for some of his races is, in fact, the same saddle worn by Phar Lap, who was Australia's, if not the world's, greatest racehorse ever. Billy Elliot, who rode Phar Lap to victory in the Agua Caliente (the world's richest horserace at the time), gave the saddle to George Woolf after Phar Lap died (under mysterious circumstances) in California.
Answer: Red asked for $10 because he needed to see a dentist, and Howard gave him $20.