Puma Kentucky Derby Scratch: Sudden Withdrawal Stuns Bettors and Shakes Up 2026 Race Odds

Churchill Downs will send 19 horses to the gate for Saturday’s 152nd Kentucky Derby after early contender The Puma was officially scratched on race-day morning because of swelling in his left front leg caused by a minor skin infection, according to track officials and the colt’s connections. The sudden development removes one of the field’s most intriguing long-shot plays. Trained by Gustavo Delgado Sr. and ridden in his prep races by Hall of Fame jockey Javier Castellano, The Puma arrived in Louisville off a sharp runner-up finish in the Wood Memorial and was trading around 25-1 on the morning-line odds. Castellano, who piloted Mage to victory in last year’s Derby, will now sit out the Run for the Roses unless he picks up a late mount. Race veterinarians detected the inflammation during a routine barn check just after dawn. “We didn’t want to take any chances,” assistant trainer Gustavo Delgado Jr. said. “He’s too nice a horse to risk his future over one race.” The colt is expected to resume training in a few weeks once the infection clears, and connections are eyeing the Haskell or Travers Stakes for his return. The scratch continues an unsettling trend during Derby week. The Puma is the fourth horse withdrawn since Wednesday, following Silent Tactic, Harbor Chief and Cajun Justice. Because all defections occurred after the 9 a.m. Friday deadline, no also-eligible alternates can draw in, leaving the gate with the maximum 20th stall empty. Handicapping fallout • Odds ripple: With The Puma out, several betting pools tightened on pace-pressing rivals Sierra Bravo and Copper Phoenix, each dropping a full point on the tote board by mid-morning. • Tactical shape: The absence of The Puma, a proven stalker, could gift frontrunner Endless Summer an easier lead through the clubhouse turn. • Exotic tickets: Bettors who keyed The Puma underneath will need to recalculate trifecta and superfecta spreads, as his projected mid-pack finish had been a popular stabilizer for vertical wagers. Why it matters The 1¼-mile Kentucky Derby is the sport’s richest stage, and every scratch shifts millions in both legal wagers and future stallion valuations. Delgado Sr. was bidding to become the first Venezuelan-born trainer to win two consecutive Derbies after Mage’s 2025 triumph. Meanwhile, Castellano loses a coveted opportunity to tie Victor Espinoza and Calvin Borel with a third Derby win. What’s next • Final post time remains 6:57 p.m. ET, with the revised field led by morning-line favorite Bluegrass King at 3-1. • The Puma will ship to a Lexington clinic for further evaluation Sunday, then return to Delgado’s Gulfstream Park base. • Updated past-performances and scratches/changes are available on the Churchill Downs website and betting apps. Fans and handicappers should refresh wagering tickets and watch for last-minute weather swings—light rain is forecast after 5 p.m.—that could further reshape the 152nd Kentucky Derby narrative.