According to the site Crew United, Rob’s character name is Charles in The Childhood of A Leader and it’s scheduled to film between June and August 2014. Interesting … very very interesting. I’m guessing [SR] next to his name stands for “supporting role”.
 
Thanks to @Lurker1510 for the tip
Ooooooh excites!
@Maria, you can’t just write.”Interesting….very, very interesting” and leave us hanging! (or is it only ME that’s left hanging?”
@Sue stop being so observant!
Not @Sue. Not just you. I feel I should know something, but don’t.