so. it's official that salty's on the DL, and going by the symptoms, they (you know, those "they" people) think he might have thoracic outlet syndrome. swimmers and volleyball players tend to get it more often, but ironically enough, 4 out of the 6 MLBers that supposedly also have (or had) TOS are also rangers, including hank blalock and matt harrison, who is out for the season while waiting for surgery later in the year. it's basically compression of the nerves and arteries near the shoulder area, but if left untreated could lead to more serious problems.
worst case scenario, salty will miss the rest of the season which would suck, yes, but at least they caught it early.
(thanks to wikipedia and the NINDS)
on a lighter note, happy 26th birthday to pedroia :)