A Tribute to Grass Wonder: A Racing Legend and Cultural Icon

08/08/2025

The equestrian world and the gaming community are mourning the loss of Grass Wonder, a celebrated thoroughbred racehorse and the muse behind a beloved character in the game Umamusume: Pretty Derby, who passed away at 30 years old. This magnificent American-bred, Japanese-trained stallion, a recipient of the 1997 Japanese Best Two-Year-Old Colt award, had been enjoying his retirement at Japan's Big Red Farm, where he succumbed to multiple organ failure associated with advanced age. His passing marks the end of an era for a horse that not only dominated the racetracks but also galloped into the hearts of a new generation through digital media.

Grass Wonder's racing career was nothing short of spectacular, highlighted by an undefeated debut in 1997 that culminated in a record-setting victory at the Asahi Hai. He continued to impress with a series of G1 wins until his retirement in 2000, including an astonishing three consecutive grand prix victories in 1999 and back-to-back championships at the prestigious Arima Kinen. His profound impact extended beyond the track, as he was a key figure in Japan's \"Golden Generation\" of racehorses, inspiring characters alongside other legends like Special Week, El Condor Pasa, King Halo, and Seiun Sky in Umamusume: Pretty Derby. The Big Red Farm released a statement expressing profound condolences for his significant contributions to Japanese horse racing, a sentiment echoed by fans worldwide and by Cygames, the developer of Umamusume, who acknowledged his enduring legacy.

The legacy of Grass Wonder lives on through his extensive lineage, having sired 736 winners from 1327 foals during his breeding career. Notably, his offspring include the 2008 Japan Cup champion, Screen Hero, who in turn sired the six-time G1 champion, Maurice, further cementing Grass Wonder's influence in the racing world. His remarkable life, characterized by excellence and profound influence, serves as a poignant reminder that true greatness transcends boundaries, touching lives in unexpected ways. His story illustrates that the spirit of a champion, whether on the track or in the realm of imagination, can inspire and uplift, leaving a lasting imprint on many hearts.