OWINGS MILLS - The Ravens are yet to say what health issue defensive lineman Arthur Jones is dealing with. But whatever it is, it's serious enough that it will keep Jones from playing against the Denver Broncos Thursday.
Baltimore released its first injury report of the week Monday and has already ruled Jones out of the game.
Jones played in the Ravens' third preseason game two weeks ago, but he hasn't practiced since.
Baltimore coach John Harbaugh addressed Jones' situation last week. He declined to elaborate on what Jones is dealing with, simply calling it a "personal health issue," but he said at the time that the issue isn't considered serious.
Jones is the Ravens' starter at defensive tackle. He had 47 tackles and 4.5 sacks for Baltimore last season and appeared poised to be an even more impactful player this season based on his play this summer.