Jayson Werth really loves No. 28. He feels such attachment to it, in fact, that when he sat down at the negotiating table with the Washington Nationals, he and his agent demanded that a clause in the contract guarantee him that jersey number. The Nats obliged, much to the dismay of first baseman/outfielder Mike Morse, who wore the number in 2010.

Baseball history is littered with strange clauses like these: When a team wants to get a deal done quickly or is truly desperate to win over a free agent, they frequently throw in strange incentives to make their offer more appealing. Werth loved his uniform number, which might seem odd, but wait until you see what sealed the deal for these other 10 players.

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