So heres a situation I'm unsure how to proceed on. 2 weeks ago I had a first round phone interview that I feel went very well. I walked out confident in my performance and apparently my feelings were justified as I was scheduled for a 2nd round phone interview today. Heres where I hit a snag. Though some poor planning on my part my wife ended up with some major oral surgery yesterday and I was up most of the night with her for various reasons. Point being I did not get a good nights sleep and it showed on the call today. While I wouldnt go so far as to say I did poorly by any stretch I definitely didnt show up with my A game. I wasnt focused nearly as much as I should have been. Which brings me to my problem. I'm going to send a follow up email thanking them for their time. What I'm wondering is if I should briefly apologize for not being focused or whether I just roll with it and hope for the best?