Generally a sports term but but can apply to all walks of life, to jinx someone or something by damning with faint praise. Other synonyms are hoodoo, whammy, bugaboo, and evil eye. cincotta was originally used by Alphated of Philly. It is based on a rabid Yankee fan, the Robin Ficker of message boards.
Big Papi is the greatest clutch hitter of all time cincotta'ed the Yankee fan.