A Bretsky curse, of course, is an enthusiastic endorsement of a player who subsequently fails. Its exact etymology, origins and archetypical examples I leave to others, but its usage demurs and hedges one's own enthusiasm for unproven players, as in "I don't want to put a Bretsky curse on the guy but this kid Bostick has great instincts and is gonna be remembered here down the road".
Next after topic after swede boxed up the Bretsky Curse:
bobblehead's suggestion of Fuckdoggle
Bud Adams told me the franchise he admired the most was the Kansas City Chiefs. Then he asked for more hookers and blow.