Have you heard of the Curse of the Santa Suit? It began in 2004, when Mike Cameron played Santa Claus at the team's Kids Holiday Party after joining the Mets.
The next season, an outfield collision with Carlos Beltran gave him a concussion and broke his nose and cheekbones.
This was only the beginning...
In 2005, Santa was played by Kris Benson, after which he was traded to the O's.
The Curse sort of skipped David Wright's Santa in Dec. 2006, though the team did collapse the end of the next season and it's hardly been smooth sailing for Wright since then.