The World Series Of Fighting has signed UFC Ultimate Fighter 13 alumni Keon Caldwell to a multi-fight contract. Caldwell made it to the second season of the UFC Ultimate Fighter 13, but a family emergency caused him to leave the program. Caldwell will enter the promotion with a record of 9-1-0 and thus far, none of his pro fights have gone to a decision. There is now word yet on when Caldwell will make his WSOF debut, but it could come as early as the WSOF IV in August.