Isaiah Washington, the actor best known for his portrayal of Dr. Preston Burke on Grey's Anatomy, has announced his retirement from the entertainment industry.

On Feb. 28, Washington tweeted, "It is with a heavy heart and a sense of relief that I am announcing my early retirement from the entertainment industry today. Those who have been Following/Witnessing my journey here on Twatter since 2011 all know that I have fought the good fight, but it seems that the haters, provocateurs and the Useful Idiots have won."