Luckily OTAs aren't as important during May practices for veterans as they might be for bubble players, or rookies continuously looking to make an impression on the team's coaching staff. Andrew Whitworth and Trevor Robinson may be out for the entire offseason training program, but that was expected. However it's more than that.
According to a tweet by Geoff Hobson, Andre Smith, Clint Boling and Dennis Roland are also rehabilitating unspecified injuries on Tuesday.
No Andre Smith; Whit Boling Robinson Roland rehab— Geoff Hobson (@GeoffHobsonCin) May 21, 2013
The first-team offensive line is reportedly filled in with Anthony Collins at right tackle, Tanner Hawkinson at left tackle and Mike Pollak at left guard. Kyle Cook and Kevin Zeitler are presumably resuming their roles as first-team starters at center and right guard respectively.
File this under "nothing to worry about", just a note of interest during a practice that's aimed at instruction, coaching and conditioning.