I suppose "worst" it subjective. I much prefer to get crushed by a better player say 6-1 than to an opponent at my level by two points in a TB. Why? It means, had I converted just two shots, I would have won -- but failed. In your case choking a few times is quite frustrating and that's why you're here.
Becker London Tour, 12.6oz, Wilson gut 17g 65lbs || Prince EXO3 Tour 18x20, 12.5oz, Wilson gut 16g 70lbs, S&V, DII '88-90