Okay. I've already completed my crossword challenge item, but I did another Sunday Crossword, and I got way more than halfway through it before I even checked to see how many wrong answers I had filled in.
The answer: not many.
My big screw up was 38 Down. I don't know what SANDMANDALA is, but it's not a SANDCASTLE. And I know now that someone named ELS won the U.S. Open twice. But I couldn't tell you the guy's first name. I pretty much guessed at that one.
Anyway. I'm just posting, here because the New York Times posted the Sunday Crossword early, and ten minutes into Sunday, I pretty much had it solved.