Clark was withheld due to a left shoulder injury.
Apparently this has been an ongoing issue -- he wore a brace during the exhibition game. The pain supposedly has affected his play and might be the reason he left games and did not return. Details are sketchy, but Google Skyy Clark shoulder injury. It is his left, so it affects his off hand.
BU has said some of his players are pussies who run to the trainer everytime they have a booboo.
Matt Mayer has chronic back pain and has publicly said he has disagreed with BU on how to deal with it.
One of the insiders at loyalty was implying that (1). the staff was using a fake injury reports to justify withholding Clark, or (2). Clark is faking the shoulder injury?