I think about this more than is probably healthy for a man in his 30's, but senior year of high school in the league tournament, I lost to someone I beat during the season, all because I did a stupid and lazy move. Ended up getting 3rd, when that probably was my best shot to win the league.
New England finals a couple weeks later, I did the same stupid and lazy move and got pinned early in the tournament. My coach and I both argued that my shoulders didn't touch, but the ref was not having it. That was really tough, because at the time I thought it was going to be my last competitive match ever. I actually broke down in the car on the ride home with how angry I was at my self.
Senior year was really my only chance to get ranked nationally, because Junior year I wrestled up at 215 lb, our captain was at 189 and I ended up almost passing out the week I tried to get to 170 lb. (Thankfully now they have changed the weight classes to be 170, 182, 195 and 220).
If you invented a time machine, you would be the richest man on the planet. - Mike Winchell, Friday Night Lights