The San Francisco Giants acquired George Kontos from the New York Yankees in exchange for catcher Chris Stewart on April 4, 2012.
A fifth-round pick by the Yankees in 2006 out of Northwestern University, Kontos began his pro career as a starter before shifting to the bullpen in 2010.
He made his MLB debut a year later with a September call-up, appearing in seven games and posting a 3.00 ERA with six strikeouts in six innings.
The Giants saw enough to trade for him and he immediately stepped into a regular role in the bullpen.