St. Louis Rams running back Steven Jackson launched his Web site last week.
Saturday he used sj39.com to announce he planned to play Sunday despite a thigh injury that kept him out last week against the New England Patriots. The Rams host the Arizona Cardinals on Sunday.
"I want to let you all know that the leg is feeling good enough for me to go on Sunday," Jackson said in a post Saturday. "This is a big game for us against Arizona, and I'm going to give everything I've got to get us a win.
"So to be clear: I am playing. Be ready."
Jackson leads the NFL with 127.8 yards from scrimmage per game.
Rams officials declined comment Saturday. They plan to work out Jackson Sunday morning before deciding if he is ready to play.