I think you only can apply a curse to a potential no-no if you are a sportswriter or a sports broadcaster.
Now, a perfect game... we all need to tread perfectly if there's a perfect game on the line. However, this is fairly easy to get around, because "has not allowed a baserunner through X" gets the point across without treading into the jinxing the 'perfect'.
EDIT: I still haven't forgotten the last Red Sox no-hitter. I will never forget the night that Clay Buchholz shut us down in his second start. I was hammered out of my mind at a friend's house (who had just gotten married that day) and I checked the score to see how the Orioles did - next thing you know I see it was a no-hitter. I was drunkenly rambling about how much the Orioles sucked for the next 20 minutes. If memory serves I even came and posted about it here at some point in that night... it gets fuzzy after a while though.
EDIT 2: And no-no is complete. I don't care who you're playing, that's impressive.
Edited by Mack Kilimaro, 19 May 2008 - 08:37 PM.