In his Major League career, Ryan has hit .257 (18-for-70) with three doubles, two home runs, 11 RBIs and seven runs scored in 27 games, including 22 starts behind the plate.
He also appeared in 63 games with Triple-A Toledo last year and had a .257 batting average with 10 home runs and 65 RBIs.
In six Minor League seasons, Ryan has hit .240 with 67 doubles, eight triples, 48 home runs, 203 RBI and 191 runs scored in 444 games. He also posted a .331 on-base percentage in the Minors while slugging .396.
Known for his strong throwing arm, Ryan has thrown out 31 percent of baserunners attempting to steal against him in the Minors.
He was originally selected by the Tigers in the 48th round of the 2003 First-Year Player Draft but was designated for assignment on Dec. 10 to make room on the 40-man roster after Detroit traded Edwin Jackson and Curtis Granderson for four prospects.
With the trade, the Padres' 40-man roster is now at 38.
Rhett Bollinger is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.