Friday night's Giants game vs. the Texas Rangers I saw Rangers catcher Jerrod Saltalamacchia play. He has the distinction of having the longest last name in baseball history at 14 letters. The name on the back of his jersey starts at mid back on the left and curls all the way around his shoulders and ends at mid back on the right. It looks very strange indeed. The old record of 13 was shared by a number of players, namely Todd Hollandsworth and William Van Landingham, two players I saw play for several years.
Apparently there is a kid in the minors at AAA who originally had a 13 letter name (from his father), but upon his parents' divorce he took his mother's 16 letter name as his own. If he's called up and he plays, he'll have the new record. I just love baseball trivia.