Significance of the injury below Shep's eye in Vegas

[polomare]

Any thoughts on this? The police detective who visits Sheppard with Woolsey makes a point of asking what happened to his eye. Later, the nurse in the hospital flirtingly asked to take a look at the injury.
It sure seemed like there was a storytelling point there somewhere, but I've watched the ep twice now and I don't see it.
What do you guys think?

[escyos]

maybe he was beaten a bit because he owed money to that guy

[themeatcleaver]

maybe he was beaten a bit because he owed money to that guy

agreed

[polomare]

Ah, I guess we are just supposed to infer that.

[Siara.Corvus]

Possibly it's just their way of saying that Sheppard gets roughed up every now and tehn. Due to his darker dealings.