The highest placed rider without a top 10 stage finish, is Tom Dumoulin.

The best placed rider who isn’t working for the yellow jersey is Damiano Cunego.
Ninja of the day, or of the race isn't entirely about numbers, it's about the whole "WTF?!?! How did he get there? I've seen him maybe 3 times this week."

It's an art, not a science. Zubeldia had it perfect, he wouldn't be on the front of the lead group but not yoyo-ing off the back like a Meintjes, or Leipheimer before him. Kloden wasn't bad either.

This is why the Ninja of the TDF so far is either Uran or Mas for me.
I always watch out for EF with increased attention and I have to say Tanel Kangert during this Giro has been the most ninja-like performance of a rider from this team I have ever seen even if he is not that high on GC.
And of course with the kit they're wearing at that race, it's just even more impressive.
Actually these kits are the hardest to spot in the peloton out of any the team have had since early 2011 (until they changed their helmtes to blue that season which made them stand out among a couple of other teams with similar kits). They're giving me headaches. I can never tell how many EFs are left in a group.