"I'd rather leave an explanation of Art's situation up to Art," Harbaugh said, according to The Baltimore Sun. "It's not anything that's like life-threatening or anything like that. It's non-football related. We've got to get some tests done to make sure that he's OK. Until the tests come out the right way, he's not going to be able to play.
"It's something I've been told now that they can't tell you how long it's going to be. It could be a week, it could be indefinitely. We don't think it's going to be the second part. He's going to see a specialist here on Wednesday and he can explain to you exactly what it's about, to whatever extent he wants to."
On Twitter, Jones chose not to share specifics of his illness.
As many of you know i'm having personal health issues. Please respect my privacy. We as athlete's go through real life problems also.Thank..â Arthur Jones (@Artj97) September 3, 2013
Arthur Jones (@Artj97) September 3, 2013
Jones entered training camp as a favorite for the Ravens' starting job at right defensive end. He finished last season with 4.5 sacks and 47 tackles, grading out as ProFootballFocus' 18th-best 3-4 end.Around The League Podcast" is now available on iTunes! Click here to listen and subscribe.