Should I mention this in a query?

[boxofredpens]

I participated in a contest where an editor read the first 20 pages of my manuscript, and after giving me his notes, he said to send him the revision. I’m wondering if that’s something I should mention in my query — he seemed interested in the manuscript and is at a high-profile publishing house, so it would be a great note to add, but maybe he was just being kind and wanted to offer more feedback?! Thank you so much for any advice!!!

[Tabris]

Assuming the editor still has it, that's something to mention during your phone call with the agent (or maybe when they make a request) but not in the query. eg, "I've attached the requested manuscript for Awesome Title. Just so you know, an editor at RandomPenguin has it after requesting it in a contest, and if he responds positively, I won't accept an offer before I've notified you."

Congrats, and good luck!

[boxofredpens]

Thank you so much, Tabris! I truly appreciate your advice - that's exactly what I'll do.

Good luck, too!