Casilla is from the same town as Dodgers third baseman Juan Uribe, whose door Casilla would knock on to borrow baseball socks as a kid.
Putting together the rest of his uniform was also a patchwork job.
His first gloves were homemade: thick cardboard into which he cut three holes for his ring, middle and index fingers. He received his first real glove in a community giveaway by late Giants shortstop Jose Uribe (Juan's uncle). He whittled bats from wood.
Casilla is the seventh of 12 children to subsistence farmers.
Ryan Hood is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.