Not a bad effort to get to day 7. Though if I could have one pick back, it would be Murray/Donskoy on the Sunday. Different choice there would've given me the option of taking him against Berlocq and leaving Del Potro for another round. But I suppose we can all say that about some of our choices and then we all might've reached the final. So nevermind. Lol!
Yes, it's common to feel you could have done better. But really, picking a big name early means you're not sure about the others. Things appear more certain in hindsight. "Of course x would bet y, I knew that, why didn't I pick x instead"? But things are never as certain before they happen.
For me, I have stopped believing I should have done better and aim to do better in future instead. I'm sure I'll see many more early exits, though