Did you know that during the physical, if a team finds out that the player received during a trade is injured they may return the player to the originating team within ten days from the date the trade was made and void the entire contract?

The Baseball Almanac trades and transactions database includes Rule 5 Draft picks, free agency information, voided trades, waiver picks, expansion draft data, amateur draft data, player refusals, bonus babies, and many other types of not readily found anywhere on the Internet.

Baseball trades & transactions, like the Mario Mendoza trades and transactions seen above, are an evolving field of research where new discoveries are often found and new player debuts are added to the data set almost daily.