I think there's a good change Parker will be nominated twice within the same category (which would be a first for an actor). I believe the only other potential nominees are Audra McDonald for Frankie and Johnny, Zawe Ashton for Betrayal, Eileen Atkins for In the Height of the Storm, Jane Alexander for Grand Horizons, and potentially someone from The Minutes (I don't know how big each role is in that show). Of this group, I think only Ashton and someone from The Minutes could realistically be nominated over one of the six performances previously mentioned. So not that many realistic candidates for the five slots. Parker could well do it.
"What was the name of that cheese that I like?"
"you can't run away forever...but there's nothing wrong with getting a good head start"
"well I hope and I pray, that maybe someday, you'll walk in the room with my heart"