19Wonder Dean (JPN)

Bet Wonder Dean with TwinSpires, the official betting partner of the Kentucky Derby.

Meet Wonder Dean: The International Racing Champion

Wonder Dean is a dark bay colt born on March 25, 2023, in Japan. Trainer Daisuke Takayanagi trains him for owner Yoshinari Yamamoto. This three-year-old has already competed in three different countries and earned over $770,000—an impressive international career!

His Family Tree

Wonder Dean's father is Dee Majesty, a stallion from Japan who earned $2.8 million and won stakes races in Japan. Deep Impact is Wonder Dean's grandsire (his father's father) and is one of Japan's greatest racehorses. His mother, Wonder Siang Praw, earned $417,000 from 22 races and won in both dirt and muddy conditions. She was particularly tough on mud, winning multiple times on sloppy dirt. This gives Wonder Dean international bloodlines built for multiple surfaces and conditions.

His Racing Record

Wonder Dean has raced six times with two wins:

• Sept. 14, 2025, at Nakayama, Japan (Maiden race, 1 1/8 miles, dirt): WON by eight lengths at 9-2 odds
• March 28, 2026, at Dubai-Meydan, UAE (Stakes race, 1 3/16 miles, fast dirt): WON by 2.5 lengths, earning major money

He's also raced in Saudi Arabia (February 2026) and competed on turf and various dirt surfaces. He earned most of his money ($655,000) in 2026 from just two races.

Wonder Dean stamped his ticket to the 2026 Kentucky Derby (G1) with a determined victory in the UAE Derby (G2) on dirt at Meydan in Dubai, the final leg of the European/Middle East Road to the Kentucky Derby. 🌍

Read Pedigree Profile ⬇️ https://t.co/MwcrGIKJS8

— TwinSpires Racing 🏇 (@TwinSpires) March 31, 2026

What Matters: Why to Root for Wonder Dean

Wonder Dean has traveled the world and succeeded in international competition. His recent wins show he is in excellent current form. He can compete on different surfaces and has proven stakes capability at classic distances (1 1/8 to 1 3/16 miles). His most recent win was huge, and he's improving.

Caution: Potential Vulnerabilities

Wonder Dean has never raced in the United States—we don't know how he'll adapt to American racing. Only two wins from six total races show inconsistency. He hasn't raced at the exact Kentucky Derby distance of 1 1/4 miles. American-based competition may differ from international racing.

Wonder Dean’s Important Related Information

• • Wonder Dean outstays Six Speed in UAE Derby
  • Kentucky Derby pedigree profile: Wonder Dean
  • TwinSpires Horse Profile: Wonder Dean
  • Kentucky Derby Context: Wonder Dean
  • Wonder Dean relishes distance, beats Six Speed in UAE Derby