Legendary horse racing trainer D. Wayne Lukas has died. The four-time Kentucky Derby winner died late Saturday evening, according to a press release from Churchill Downs. Lukas, who was 89, died peacefully while surrounded by family.

Lukas died on the evening of June 28 at age 89. He was hospitalized in Louisville last week after a severe MRSA blood infection caused significant damage to the thoroughbred trainer's heart, digestive system and worsened preexisting chronic conditions, according to a statement from the Lukas family.